TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
LUMIERE COHERENTE [20 records]
Record 1 - internal organization data 2024-01-27
Record 1, English
Record 1, Subject field(s)
- Facilities and Instruments (Astronomy)
- Computer Graphics
- Optics
Record 1, Main entry term, English
- speckle interferometry
1, record 1, English, speckle%20interferometry
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record 1, French
Record 1, Domaine(s)
- Installations et instruments (Astronomie)
- Infographie
- Optique
Record 1, Main entry term, French
- interférométrie par granulation cohérente
1, record 1, French, interf%C3%A9rom%C3%A9trie%20par%20granulation%20coh%C3%A9rente
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- interférométrie speckle 2, record 1, French, interf%C3%A9rom%C3%A9trie%20speckle
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
Il y a quelques années, alors que je commençais à rêver aux interféromètres géants [...] l'idée me vint d’une généralisation possible du principe de Fizeau. Il en résulta la méthode de "Speckle interferometry" [...] dont les premiers résultats ont déclenché une floraison de recherches sur la pénétration optique de l'atmosphère. [...] j’effectuais un rapprochement entre deux phénomènes curieux : d’une part la granulation cohérente ou "speckle", produite par la lumière laser, et d’autres part les condensations lumineuses [...] 3, record 1, French, - interf%C3%A9rom%C3%A9trie%20par%20granulation%20coh%C3%A9rente
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - external organization data 2022-03-22
Record 2, English
Record 2, Subject field(s)
- Compartment - Royal Canadian Mounted Police (RCMP)
Record 2, Main entry term, English
- outline of the writing
1, record 2, English, outline%20of%20the%20writing
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
This method involves microfilming the page to be processed. The microfilm is then treated as an opaque screen containing a set of transparent letters and signs. A coherent beam of light (a laser beam) is then passed through the screen, on which the outline of the writing remains transparent. 1, record 2, English, - outline%20of%20the%20writing
Record 2, French
Record 2, Domaine(s)
- Tiroir - Gendarmerie royale du Canada (GRC)
Record 2, Main entry term, French
- tracé de l'écriture
1, record 2, French, trac%C3%A9%20de%20l%27%C3%A9criture
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
La méthode consiste à microfilmer la page à étudier. Le microfilm est considéré comme un écran opaque dans lequel se trouve un ensemble de caractères et de signes transparents. Ensuite, on fait passer un faisceau de lumière cohérente(rayon laser) à travers l'écran, où le tracé de l'écriture est resté transparent. 1, record 2, French, - trac%C3%A9%20de%20l%27%C3%A9criture
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2020-11-26
Record 3, English
Record 3, Subject field(s)
- Optics
- Computer Graphics
- Photography
Record 3, Main entry term, English
- transmission hologram
1, record 3, English, transmission%20hologram
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
The typical transmission hologram is viewed with laser light, usually of the same type used to make the recording. This light is directed from behind the hologram and the image is transmitted to the observer's side. 2, record 3, English, - transmission%20hologram
Record 3, French
Record 3, Domaine(s)
- Optique
- Infographie
- Photographie
Record 3, Main entry term, French
- hologramme par transmission
1, record 3, French, hologramme%20par%20transmission
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- hologramme de transmission 2, record 3, French, hologramme%20de%20transmission
correct, masculine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
Il existe deux types d’hologrammes : les hologrammes par réflexion, qui sont observables avec une lumière blanche(lumière du soleil ou d’une lampe), et les hologrammes par transmission qui sont seulement observables en lumière monochromatique et cohérente(lumière laser). 1, record 3, French, - hologramme%20par%20transmission
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2015-04-13
Record 4, English
Record 4, Subject field(s)
- Optics
Record 4, Main entry term, English
- non-coherent light 1, record 4, English, non%2Dcoherent%20light
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
Common light sources like the sun and electric bulbs radiate light over a broad, multi-chromatic range of the spectrum. It is this light that we call non-coherent light. 1, record 4, English, - non%2Dcoherent%20light
Record 4, French
Record 4, Domaine(s)
- Optique
Record 4, Main entry term, French
- lumière non cohérente
1, record 4, French, lumi%C3%A8re%20non%20coh%C3%A9rente
feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Les sources de lumière telles que le soleil et l'ampoule électrique ont une diffusion multichromatique sur une large partie du spectre. C'est cette lumière qu'on qualifie de lumière non cohérente. 1, record 4, French, - lumi%C3%A8re%20non%20coh%C3%A9rente
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2012-03-07
Record 5, English
Record 5, Subject field(s)
- Internet and Telematics
- Telecommunications Transmission
- Photoelectricity and Electron Optics
Record 5, Main entry term, English
- optoelectronic device
1, record 5, English, optoelectronic%20device
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record 5, French
Record 5, Domaine(s)
- Internet et télématique
- Transmission (Télécommunications)
- Photo-électricité et optique électronique
Record 5, Main entry term, French
- dispositif optoélectronique
1, record 5, French, dispositif%20opto%C3%A9lectronique
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Dispositif sensible aux rayonnements optiques; émission ou modification de la lumière(cohérent ou non cohérente) de ces mêmes rayonnements, ou encore utilisation pour son propre fonctionnement. 2, record 5, French, - dispositif%20opto%C3%A9lectronique
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2011-09-07
Record 6, English
Record 6, Subject field(s)
- Welding - Various Processes
- Lasers and Masers
Record 6, Main entry term, English
- laser beam welding
1, record 6, English, laser%20beam%20welding
correct, standardized, officially approved
Record 6, Abbreviations, English
- LBW 2, record 6, English, LBW
correct, standardized, officially approved
Record 6, Synonyms, English
- laser welding 3, record 6, English, laser%20welding
correct, officially approved
- laser bonding 4, record 6, English, laser%20bonding
correct
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
A welding process which produces coalescence of materials with the heat obtained from the application of a concentrated coherent light beam impinging upon the members to be joined. [Definition standardized by the AWS.] 5, record 6, English, - laser%20beam%20welding
Record number: 6, Textual support number: 1 OBS
laser beam welding; LBW: term and abbreviation standardized by the American Welding Society (AWS). 6, record 6, English, - laser%20beam%20welding
Record number: 6, Textual support number: 2 OBS
laser beam welding; LBW: term and abbreviation standardized by the CSA International. Material reproduced with the permission of the copyright holder, the Canadian Standards Association (CSA), 178 Rexdale Blvd., Toronto, Ontario, Canada M9W 1R3. However, CSA shall not be responsible for the manner in which the information is presented, nor for any interpretations thereof. This CSA material may not have been updated to reflect amendments subsequently made to the original content. For further information, contact CSA International. 6, record 6, English, - laser%20beam%20welding
Record number: 6, Textual support number: 3 OBS
laser beam welding; laser welding; LBW: terms and abbreviation officially approved by the Lexicon Project Committee (New Brunswick). 7, record 6, English, - laser%20beam%20welding
Record 6, French
Record 6, Domaine(s)
- Procédés de soudage divers
- Masers et lasers
Record 6, Main entry term, French
- soudage par faisceau laser
1, record 6, French, soudage%20par%20faisceau%20laser
correct, masculine noun, standardized
Record 6, Abbreviations, French
Record 6, Synonyms, French
- soudage laser 2, record 6, French, soudage%20laser
correct, masculine noun, standardized, officially approved
- procédé LBW 3, record 6, French, proc%C3%A9d%C3%A9%20LBW
correct, masculine noun, standardized, officially approved
- soudage par laser 4, record 6, French, soudage%20par%20laser
correct, masculine noun
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Procédé de soudage par rayonnement lumineux dont la chaleur nécessaire à la fusion est fournie par la lumière cohérente et monochromatique émise par un laser. 5, record 6, French, - soudage%20par%20faisceau%20laser
Record number: 6, Textual support number: 1 OBS
soudage par faisceau laser; soudage laser; procédé LBW : termes normalisés par la CSA International. Reproduit avec l’autorisation de l’Association canadienne de normalisation (CSA), 178, boul. Rexdale, Toronto (Ontario), Canada M9W 1R3 (détentrice des droits d’auteur). La CSA décline toute responsabilité quant à la façon dont la matière est présentée et quant à toute interprétation pouvant en découler. L’information reproduite pourrait ne pas être à jour. Pour plus de renseignements, communiquer avec la CSA International. 6, record 6, French, - soudage%20par%20faisceau%20laser
Record number: 6, Textual support number: 2 OBS
soudage laser; procédé LBW : termes uniformisés par le Comité du projet de lexiques (Nouveau-Brunswick). 7, record 6, French, - soudage%20par%20faisceau%20laser
Record number: 6, Textual support number: 1 PHR
Soudage laser 3D. 8, record 6, French, - soudage%20par%20faisceau%20laser
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 2007-04-26
Record 7, English
Record 7, Subject field(s)
- Lamps
- Photography
- Telecommunications
Record 7, Main entry term, English
- mercury lamp
1, record 7, English, mercury%20lamp
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
- mercury vapour lamp 2, record 7, English, mercury%20vapour%20lamp
correct
- mercury vapor lamp 3, record 7, English, mercury%20vapor%20lamp
correct
- mercury discharge lamp 4, record 7, English, mercury%20discharge%20lamp
correct
- mercury-vapor lamp 5, record 7, English, mercury%2Dvapor%20lamp
- mercury-arc lamp 6, record 7, English, mercury%2Darc%20lamp
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
An electric discharge lamp in which the major portion of the radiation is produced by the excitation of mercury atoms. 7, record 7, English, - mercury%20lamp
Record 7, French
Record 7, Domaine(s)
- Lampes
- Photographie
- Télécommunications
Record 7, Main entry term, French
- lampe à vapeur de mercure
1, record 7, French, lampe%20%C3%A0%20vapeur%20de%20mercure
correct, feminine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
- lampe à mercure 2, record 7, French, lampe%20%C3%A0%20mercure
feminine noun
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Lampe à quartz contenant une petite quantité de mercure qui passe à l'état gazeux sous l'action de décharges électriques et émet une lumière intense presque cohérente et de couleur verte. 3, record 7, French, - lampe%20%C3%A0%20vapeur%20de%20mercure
Record number: 7, Textual support number: 1 CONT
[...] l’inventeur américain Cooper Hewitt [...] construisit la première des lampes à vapeur de mercure fonctionnant en courant alternatif. L’étude de la décharge électroluminescente dans la vapeur de mercure montre que l’efficacité lumineuse augmente et que la composition spectrale [...] s’enrichit [...] à mesure que la pression croît. 4, record 7, French, - lampe%20%C3%A0%20vapeur%20de%20mercure
Record 7, Spanish
Record 7, Campo(s) temático(s)
- Lámparas
- Fotografía
- Telecomunicaciones
Record 7, Main entry term, Spanish
- lámpara de vapor de mercurio
1, record 7, Spanish, l%C3%A1mpara%20de%20vapor%20de%20mercurio
correct, feminine noun
Record 7, Abbreviations, Spanish
Record 7, Synonyms, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 2006-11-02
Record 8, English
Record 8, Subject field(s)
- Coal Preparation
Record 8, Main entry term, English
- low-angle laser light scattering
1, record 8, English, low%2Dangle%20laser%20light%20scattering
correct
Record 8, Abbreviations, English
- LALLS 2, record 8, English, LALLS
correct
Record 8, Synonyms, English
- low angle laser light scattering 3, record 8, English, low%20angle%20laser%20light%20scattering
correct
- LALLS 3, record 8, English, LALLS
correct
- LALLS 3, record 8, English, LALLS
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
Particle sizes and distribution can be successfully measured using low angle laser light scattering (LALLS). This technique uses a light source of known wavelength to cause oscillation of the dipoles present in the particles. The electromagnetic energy released from these oscillating dipoles, known as secondary radiation, radiates out in all directions except along the axis of oscillation. The ratio between the wavelength of incident radiation and the particle size will determine the actual light scattering pattern from the particle. 3, record 8, English, - low%2Dangle%20laser%20light%20scattering
Record number: 8, Textual support number: 2 CONT
Low-angle laser light scattering and thermal analysis techniques will be used to characterize emulsions/demulsifiers. 4, record 8, English, - low%2Dangle%20laser%20light%20scattering
Record 8, French
Record 8, Domaine(s)
- Préparation des charbons
Record 8, Main entry term, French
- diffraction de lumière laser aux petits angles
1, record 8, French, diffraction%20de%20lumi%C3%A8re%20laser%20aux%20petits%20angles
correct, feminine noun
Record 8, Abbreviations, French
- LALLS 2, record 8, French, LALLS
correct
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Diffraction de lumière laser aux petits angles. Lorsqu'une particule sphérique est éclairée par un faisceau parallèle de lumière cohérente et monochromatique, un motif de diffraction vient se superposer à l'image géométrique. Ce motif est grand par rapport à l'image, les petites particules diffractant la lumière suivant un angle plus grand que les grosses particules. Une gamme granulométrique peut être divisée en intervalles de taille qui génèrent chacun un motif de diffraction en fonction de sa taille moyenne, avec une intensité fonction du nombre de particules qu'il contient. On peut donc obtenir la distribution granulométrique en analysant le motif de diffraction. 1, record 8, French, - diffraction%20de%20lumi%C3%A8re%20laser%20aux%20petits%20angles
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 2005-05-17
Record 9, English
Record 9, Subject field(s)
- Photography
- Computer Graphics
- Lasers and Masers
Record 9, Main entry term, English
- hologram
1, record 9, English, hologram
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
- relief image 2, record 9, English, relief%20image
correct
- hologram interferometer 3, record 9, English, hologram%20interferometer
correct
- total recording 4, record 9, English, total%20recording
Record 9, Textual support, English
Record number: 9, Textual support number: 1 DEF
A three-dimensional image obtained by removing exposed or unexposed areas from the light-sensitive layer, so that the image positions are raised above the surface of the support. 2, record 9, English, - hologram
Record number: 9, Textual support number: 1 CONT
Commonly used as identifying features on credit cards, holograms could serve the same function on currency - if they could be made durable enough for the rough-and-tumble life of paper money. 5, record 9, English, - hologram
Record number: 9, Textual support number: 1 PHR
High-resolution X-ray hologram. 6, record 9, English, - hologram
Record 9, French
Record 9, Domaine(s)
- Photographie
- Infographie
- Masers et lasers
Record 9, Main entry term, French
- hologramme
1, record 9, French, hologramme
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 DEF
Imprimé à effet tridimensionnel réalisé par l’enregistrement et la reproduction d’une image, notamment à l’aide de deux faisceaux laser sur un support photosensible. 2, record 9, French, - hologramme
Record number: 9, Textual support number: 1 OBS
L'hologramme ne ressemble à aucune photographie classique; tout déplacement de l'observateur change l'aspect de l'image observée. Pour réaliser un hologramme, il faut un laser, source de lumière cohérente et une surface photographique dotée d’une exceptionnelle finesse de résolution. 3, record 9, French, - hologramme
Record number: 9, Textual support number: 2 OBS
Définition tirée du Vocabulaire de la flexographie de France Brodeur. Reproduction autorisée par l’Institut des communications graphiques du Québec. 4, record 9, French, - hologramme
Record 9, Spanish
Record 9, Campo(s) temático(s)
- Fotografía
- Gráficos de computadora
- Láser y máser
Record 9, Main entry term, Spanish
- holograma
1, record 9, Spanish, holograma
correct, masculine noun
Record 9, Abbreviations, Spanish
Record 9, Synonyms, Spanish
Record 9, Textual support, Spanish
Record number: 9, Textual support number: 1 DEF
Imagen tridimensional producida, en un aire enrarecido, por rayos láser interactuando entre sí. 2, record 9, Spanish, - holograma
Record number: 9, Textual support number: 1 PHR
Holograma de alta resolución mediante rayos X. 3, record 9, Spanish, - holograma
Record 10 - internal organization data 2003-10-23
Record 10, English
Record 10, Subject field(s)
- Atomic Physics
- Aircraft Piloting and Navigation
- Navigation Instruments
- Ship Piloting
Record 10, Main entry term, English
- nuclear magnetic resonance gyroscope
1, record 10, English, nuclear%20magnetic%20resonance%20gyroscope
correct
Record 10, Abbreviations, English
- NMRG 2, record 10, English, NMRG
correct
Record 10, Synonyms, English
- nuclear magnetic resonance gyro 3, record 10, English, nuclear%20magnetic%20resonance%20gyro
correct
- nuclear gyroscope 4, record 10, English, nuclear%20gyroscope
correct
- atomic gyro 5, record 10, English, atomic%20gyro
Record 10, Textual support, English
Record number: 10, Textual support number: 1 DEF
A gyroscope utilizing the spin of electrons and atomic nuclei rather than a spinning mass. 4, record 10, English, - nuclear%20magnetic%20resonance%20gyroscope
Record number: 10, Textual support number: 1 CONT
Through DOD [Department of Defense] and industry in-house independent research and development, considerable advances in [inertial navigation] have been done. Some of [the] new generation sensors are the ring laser gyro (RLG) ..., the nuclear magnetic resonance gyroscope (NMRG), and the hemi-spherical resonator gyroscope (HRG). 2, record 10, English, - nuclear%20magnetic%20resonance%20gyroscope
Record 10, Key term(s)
- nuclear gyro
- atomic gyroscope
Record 10, French
Record 10, Domaine(s)
- Physique atomique
- Pilotage et navigation aérienne
- Instruments de navigation
- Pilotage des navires
Record 10, Main entry term, French
- gyroscope à résonance magnétique nucléaire
1, record 10, French, gyroscope%20%C3%A0%20r%C3%A9sonance%20magn%C3%A9tique%20nucl%C3%A9aire
correct, masculine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
- gyroscope nucléaire 2, record 10, French, gyroscope%20nucl%C3%A9aire
correct, masculine noun
Record 10, Textual support, French
Record number: 10, Textual support number: 1 DEF
Gyroscope utilisant les propriétés inertielles (spin) des particules élémentaires. 3, record 10, French, - gyroscope%20%C3%A0%20r%C3%A9sonance%20magn%C3%A9tique%20nucl%C3%A9aire
Record number: 10, Textual support number: 1 CONT
[...] certains laboratoires ont étudié divers dispositifs de mesure des rotations absolues ne présentant qu'une analogie assez lointaine avec les gyroscopes classiques. Ce sont les gyroscopes à vibrations, dans lesquels le mouvement de rotation de la toupie est remplacé par le mouvement de va-et-vient d’éléments mécaniques; les gyroscopes nucléaires, dans lesquels le spin du noyau atomique est utilisé comme référence spatiale; les gyroscopes optiques, exploitant les propriétés de la lumière cohérente [...] 4, record 10, French, - gyroscope%20%C3%A0%20r%C3%A9sonance%20magn%C3%A9tique%20nucl%C3%A9aire
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2003-09-05
Record 11, English
Record 11, Subject field(s)
- Information Processing (Informatics)
- Computer Memories
Record 11, Main entry term, English
- read/write
1, record 11, English, read%2Fwrite
correct, verb
Record 11, Abbreviations, English
Record 11, Synonyms, English
Record 11, Textual support, English
Record number: 11, Textual support number: 1 DEF
To record data on (write) or retrieve data from (read) electromagnetic or optical digital storage media. 2, record 11, English, - read%2Fwrite
Record 11, French
Record 11, Domaine(s)
- Traitement de l'information (Informatique)
- Mémoires (Informatique)
Record 11, Main entry term, French
- lire ou écrire
1, record 11, French, lire%20ou%20%C3%A9crire
correct
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, Textual support number: 1 CONT
Cet élément opère la conversion de la lumière rouge en lumière bleue cohérente que l'on utilise pour lire ou écrire des données sur un disque optique. 1, record 11, French, - lire%20ou%20%C3%A9crire
Record 11, Spanish
Record 11, Campo(s) temático(s)
- Tratamiento de la información (Informática)
- Memorias (Computadoras)
Record 11, Main entry term, Spanish
- leer/escribir 1, record 11, Spanish, leer%2Fescribir
Record 11, Abbreviations, Spanish
Record 11, Synonyms, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 2002-07-16
Record 12, English
Record 12, Subject field(s)
- Lasers and Masers
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 12, Main entry term, English
- fringe count
1, record 12, English, fringe%20count
correct
Record 12, Abbreviations, English
Record 12, Synonyms, English
- interference fringe count 2, record 12, English, interference%20fringe%20count
Record 12, Textual support, English
Record number: 12, Textual support number: 1 CONT
Laser gyro... One of [the] beams is folded back on the other, causing interference fringes to form on a readout detector. Interference fringes appear as alternate bright and dark bands which move either left or right as the gyro is rotated. By accumulating fringe counts (clockwise positive and counterclockwise negative), the total angle through which the instrument has been rotated is measured. 1, record 12, English, - fringe%20count
Record number: 12, Textual support number: 1 OBS
interference fringes: (optics) A series of light and dark bands produced by interference of light waves. 3, record 12, English, - fringe%20count
Record 12, French
Record 12, Domaine(s)
- Masers et lasers
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 12, Main entry term, French
- nombre de franges
1, record 12, French, nombre%20de%20franges
correct, masculine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
- nombre de franges d'interférence 2, record 12, French, nombre%20de%20franges%20d%27interf%C3%A9rence
correct, masculine noun
Record 12, Textual support, French
Record number: 12, Textual support number: 1 CONT
Dans les gyrolasers des centrales SAGEM [...] [la] cavité a la forme d’un triangle équilatéral et trois électrodes [...] excitent un mélange d’hélium et de néon créant ainsi un milieu amplificateur. [...] Lorsqu’il y a rotation de la cavité autour de [l’axe de rotation], les trajets suivis sont de longueurs différentes et les temps de parcours des deux ondes ainsi que les deux fréquences d’oscillations ne sont plus identiques. La superposition d’une fraction de la lumière de ces deux faisceaux fait alors apparaître des franges d’interférence dont le sens et la vitesse de défilement dépendent du sens et de la vitesse de rotation. Une cellule photoélectrique détecte le sens de la vitesse du défilement et un système de comptage mesure le nombre de franges. 1, record 12, French, - nombre%20de%20franges
Record number: 12, Textual support number: 1 OBS
Deux faisceaux de lumière monochromatique cohérente, issus d’un même laser, et parcourant des chemins optiques de même longueur, sont focalisés et croisés en un point où se forme alors un réseau de franges d’interférence. Des particules, grains de poussière ou gouttelettes, sont entraînées par l'écoulement. Quand une particule traverse ces franges alternativement sombres et brillantes, elle diffuse un signal lumineux modulé en amplitude à une certaine fréquence. 3, record 12, French, - nombre%20de%20franges
Record 12, Key term(s)
- nombre de franges d'interférences
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 2002-06-25
Record 13, English
Record 13, Subject field(s)
- Lasers and Masers
- Optics
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 13, Main entry term, English
- spectral purity
1, record 13, English, spectral%20purity
correct
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 CONT
The mechanical precision is the hard part and that's what makes it virtually impossible for an amateur to construct a ring laser gyro. The two opposite traveling waves have to have extremely high spectral purity which translates to high quality, high reflectance flats at the corners. Not a home job. 2, record 13, English, - spectral%20purity
Record number: 13, Textual support number: 2 CONT
The RLG [ring laser gyro] is used because it can operate continuously, has good spectral purity, is nearly monochromatic ... 3, record 13, English, - spectral%20purity
Record 13, French
Record 13, Domaine(s)
- Masers et lasers
- Optique
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 13, Main entry term, French
- pureté spectrale
1, record 13, French, puret%C3%A9%20spectrale
correct, feminine noun
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 CONT
Certaines applications tel que la télécommunication cohérente, la génération de signaux haute fréquence modulés en phase, la spectroscopie ou même l'interférométrie, nécessitent l'utilisation de source de lumière de très haute pureté spectrale. Les sources laser à semiconducteur ne peuvent être utilisées car elle présentent une largeur de raie supérieure au MHz. Grâce à la diffusion Brillouin stimulée qui est un effet non-linéaire intrinsèque aux fibres optiques, on peut réaliser une source laser de très haute pureté spectrale. 2, record 13, French, - puret%C3%A9%20spectrale
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 2001-08-23
Record 14, English
Record 14, Subject field(s)
- Lasers and Masers
- Optics
Record 14, Main entry term, English
- lasing phenomenon
1, record 14, English, lasing%20phenomenon
correct
Record 14, Abbreviations, English
Record 14, Synonyms, English
- laser phenomenon 2, record 14, English, laser%20phenomenon
correct
Record 14, Textual support, English
Record number: 14, Textual support number: 1 CONT
The lasing phenomenon is made possible by a process called the stimulated emission of radiation. This occurs when a photon interacts with an excited atom, causing it to drop down to a lower energy level. The photon given off by the atom then has the same phase, direction, and polarization as the initial photon. By repeating this process many times, one can produce a highly coherent beam of light. 3, record 14, English, - lasing%20phenomenon
Record 14, French
Record 14, Domaine(s)
- Masers et lasers
- Optique
Record 14, Main entry term, French
- phénomène laser
1, record 14, French, ph%C3%A9nom%C3%A8ne%20laser
correct, masculine noun
Record 14, Abbreviations, French
Record 14, Synonyms, French
Record 14, Textual support, French
Record number: 14, Textual support number: 1 CONT
Le laser est un procédé permettant de créer de la lumière monochromatique «organisée», ou cohérente. Le phénomène laser se fonde sur un procédé connu sous le nom d’émission stimulée. Le mot laser, sigle de l'expression anglaise «light amplification by stimulated emission of radiation», signifie amplification de lumière par émission stimulée de rayonnement. 2, record 14, French, - ph%C3%A9nom%C3%A8ne%20laser
Record number: 14, Textual support number: 2 CONT
La possibilité du phénomène laser et d’émission éventuelle d’un rayon laser sont liées aux conditions suivantes : Existence d’un milieu (dans le cas du gyromètre laser, c’est un gaz) possédant au moins trois niveaux d’énergie [...]. Existence d’un procédé, dit de pompage, impliquant un apport d’énergie faisant passer un grand nombre d’électrons du niveau E0) au niveau E [indice 2. Dans le cas des gyromètres laser, le pompage est obtenu par voie électrique [...]. Existence d’un phénomène de résonance correspondant à des ondes lumineuses [...] Dans le cas des gyromètres laser, une cavité résonnante est formée par un ensemble de miroirs de haute qualité. 3, record 14, French, - ph%C3%A9nom%C3%A8ne%20laser
Record 14, Spanish
Record 14, Textual support, Spanish
Record 15 - internal organization data 2001-08-20
Record 15, English
Record 15, Subject field(s)
- Measuring Instruments (Engineering)
- Optics
- Navigation Instruments
Record 15, Main entry term, English
- optical gyro
1, record 15, English, optical%20gyro
correct
Record 15, Abbreviations, English
Record 15, Synonyms, English
- optical gyroscope 2, record 15, English, optical%20gyroscope
correct
Record 15, Textual support, English
Record number: 15, Textual support number: 1 CONT
A more advanced type of gyro is the optical gyroscope. These devices are based on two counter-rotating beams of light travelling in a ring-like structure. The interaction of the two light beams produces a standing wave pattern. If the ring is then rotated about its centre axis (think of a torus spinning around its core), one of the beams has to travel a slightly longer distance, and the other a slightly shorter distance to get back to where they started. This will cause a shift in the pattern of the standing wave, and this can be measured to determine the rate of rotation. 3, record 15, English, - optical%20gyro
Record number: 15, Textual support number: 2 CONT
Most people would remember the classic rotating disc gyroscope, which belongs to the mechanical group. One of today's high precision gyros is still the mechanical, rotating gyro; however it is dependent on linear accelerations because of its mechanical measuring principle. The optical group comprises the fibre optic- and laser types. These use the Sagnac Effect (named after its French discoverer), which, when the sensor is turned, results in a difference in transit time between two light waves passing through the same optical path but in opposite directions. Optical gyros therefore do not depend on acceleration as gyros in the mechanical group. This is one of their biggest advantages ... 4, record 15, English, - optical%20gyro
Record 15, French
Record 15, Domaine(s)
- Instruments de mesure (Ingénierie)
- Optique
- Instruments de navigation
Record 15, Main entry term, French
- gyroscope optique
1, record 15, French, gyroscope%20optique
correct, masculine noun
Record 15, Abbreviations, French
Record 15, Synonyms, French
Record 15, Textual support, French
Record number: 15, Textual support number: 1 CONT
Réaliser un gyroscope optique d’un prix de revient de quelques centaines de francs. Voilà une prouesse technologique quand on sait que les systèmes actuels, les gyroscopes laser, coûtent entre 100 000 francs et 1 million de francs. La solution mise au point par Mohamed Bouamra, chercheur à l’École nationale supérieure de physique de Strasbourg, tient à une habile substitution de technologies : une simple diode électroluminescente remplace le laser, tandis que des banales fibres optiques multimodes prennent la place des coûteuses fibres monomodes. 2, record 15, French, - gyroscope%20optique
Record number: 15, Textual support number: 2 CONT
[...] certains laboratoires ont étudié divers dispositifs de mesure des rotations absolues ne présentant qu'une analogie assez lointaine avec les gyroscopes classiques. Ce sont les gyroscopes à vibrations [...]; les gyroscopes nucléaires [...]; les gyroscopes optiques, exploitant les propriétés de la lumière cohérente [...] 3, record 15, French, - gyroscope%20optique
Record 15, Spanish
Record 15, Textual support, Spanish
Record 16 - internal organization data 2001-05-30
Record 16, English
Record 16, Subject field(s)
- Lasers and Masers
- Optics
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 16, Main entry term, English
- interference fringe counting
1, record 16, English, interference%20fringe%20counting
correct
Record 16, Abbreviations, English
Record 16, Synonyms, English
- fringe counting 2, record 16, English, fringe%20counting
correct
Record 16, Textual support, English
Record number: 16, Textual support number: 1 OBS
Laser gyro... One of [the] beams is folded back on the other, causing interference fringes to form on a readout detector. Interference fringes appear as alternate bright and dark bands which move either left or right as the gyro is rotated. By accumulating fringe counts (clockwise positive and counterclockwise negative), the total angle through which the instrument has been rotated is measured. 3, record 16, English, - interference%20fringe%20counting
Record number: 16, Textual support number: 2 OBS
interference fringes: (optics) A series of light and dark bands produced by interference of light waves. 4, record 16, English, - interference%20fringe%20counting
Record 16, French
Record 16, Domaine(s)
- Masers et lasers
- Optique
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 16, Main entry term, French
- comptage des franges
1, record 16, French, comptage%20des%20franges
correct, masculine noun
Record 16, Abbreviations, French
Record 16, Synonyms, French
- comptage des franges d'interférence 2, record 16, French, comptage%20des%20franges%20d%27interf%C3%A9rence
correct, masculine noun
Record 16, Textual support, French
Record number: 16, Textual support number: 1 CONT
Par rapport aux gyromètres mécaniques [...] le gyromètre laser présente une meilleure dynamique [...] due à la différence des phénomènes physiques pouvant donner lieu à saturation : comptage des franges dans le gyromètre laser, aimantation d’un matériau magnétique dans le cas du gyromètre mécanique; [...] 1, record 16, French, - comptage%20des%20franges
Record number: 16, Textual support number: 1 OBS
Deux faisceaux de lumière monochromatique cohérente, issus d’un même laser, et parcourant des chemins optiques de même longueur, sont focalisés et croisés en un point où se forme alors un réseau de franges d’interférence. 3, record 16, French, - comptage%20des%20franges
Record number: 16, Textual support number: 2 OBS
frange d’interférence : Raies alternativement brillantes et sombres obtenues par l’interférence de radiations lumineuses. 4, record 16, French, - comptage%20des%20franges
Record 16, Spanish
Record 16, Textual support, Spanish
Record 17 - internal organization data 2000-07-20
Record 17, English
Record 17, Subject field(s)
- Photoelectricity and Electron Optics
Record 17, Main entry term, English
- coherent source
1, record 17, English, coherent%20source
correct
Record 17, Abbreviations, English
Record 17, Synonyms, English
Record 17, Textual support, English
Record number: 17, Textual support number: 1 CONT
Modes are the equivalent of "standing waves" in a fiber - paths for modes are reinforced by electromagnetic fields. You can actually see the effects of modes by transmitting a coherent source (laser) down a multimode fiber. 1, record 17, English, - coherent%20source
Record 17, French
Record 17, Domaine(s)
- Photo-électricité et optique électronique
Record 17, Main entry term, French
- source cohérente
1, record 17, French, source%20coh%C3%A9rente
correct, feminine noun
Record 17, Abbreviations, French
Record 17, Synonyms, French
Record 17, Textual support, French
Record number: 17, Textual support number: 1 DEF
Source optique qui émet une lumière cohérente. 2, record 17, French, - source%20coh%C3%A9rente
Record 17, Spanish
Record 17, Textual support, Spanish
Record 18 - internal organization data 1993-08-08
Record 18, English
Record 18, Subject field(s)
- Optics
- Computer Graphics
Record 18, Main entry term, English
- coherent light
1, record 18, English, coherent%20light
correct
Record 18, Abbreviations, English
Record 18, Synonyms, English
Record 18, Textual support, English
Record number: 18, Textual support number: 1 DEF
Radiant electromagnetic energy of the same, or almost the same wavelength, and with definite phase relationships between different points in the field. 2, record 18, English, - coherent%20light
Record number: 18, Textual support number: 1 OBS
coherent sources: Those between which definite phase relationships are maintained, so enabling interference effects to occur. 3, record 18, English, - coherent%20light
Record 18, French
Record 18, Domaine(s)
- Optique
- Infographie
Record 18, Main entry term, French
- lumière cohérente
1, record 18, French, lumi%C3%A8re%20coh%C3%A9rente
correct, feminine noun
Record 18, Abbreviations, French
Record 18, Synonyms, French
Record 18, Textual support, French
Record number: 18, Textual support number: 1 CONT
Lumière cohérente. On dit que des sources de lumière sont cohérentes lorsque la différence de phase des vibrations qu'elles émettent est constante au cours du temps. 2, record 18, French, - lumi%C3%A8re%20coh%C3%A9rente
Record number: 18, Textual support number: 1 OBS
sources cohérentes: Sources lumineuses provenant du dédoublement d’une source unique et pouvant produire des interférences. 3, record 18, French, - lumi%C3%A8re%20coh%C3%A9rente
Record 18, Spanish
Record 18, Textual support, Spanish
Record 19 - internal organization data 1991-01-03
Record 19, English
Record 19, Subject field(s)
- Radio Waves
- Computer Graphics
- Optics
Record 19, Main entry term, English
- coupled wave theory
1, record 19, English, coupled%20wave%20theory
correct
Record 19, Abbreviations, English
Record 19, Synonyms, English
Record 19, Textual support, English
Record 19, French
Record 19, Domaine(s)
- Ondes radioélectriques
- Infographie
- Optique
Record 19, Main entry term, French
- théorie des ondes couplées
1, record 19, French, th%C3%A9orie%20des%20ondes%20coupl%C3%A9es
correct, feminine noun
Record 19, Abbreviations, French
Record 19, Synonyms, French
Record 19, Textual support, French
Record number: 19, Textual support number: 1 DEF
Théorie qui explique la propagation de la lumière cohérente à l'intérieur d’un milieu enregistreur et sa diffraction produite par les trates du réseau formant un hologramme. 1, record 19, French, - th%C3%A9orie%20des%20ondes%20coupl%C3%A9es
Record 19, Spanish
Record 19, Textual support, Spanish
Record 20 - internal organization data 1981-05-20
Record 20, English
Record 20, Subject field(s)
- Telecommunications
- Telecommunications Transmission
Record 20, Main entry term, English
- laser communications 1, record 20, English, laser%20communications
Record 20, Abbreviations, English
Record 20, Synonyms, English
Record 20, Textual support, English
Record number: 20, Textual support number: 1 OBS
A system for transmitting coherent beams of flight which may form high capacity communications links in the future. 1, record 20, English, - laser%20communications
Record 20, French
Record 20, Domaine(s)
- Télécommunications
- Transmission (Télécommunications)
Record 20, Main entry term, French
- transmission par laser 1, record 20, French, transmission%20par%20laser
Record 20, Abbreviations, French
Record 20, Synonyms, French
Record 20, Textual support, French
Record number: 20, Textual support number: 1 OBS
Transmission de communications au moyen de faisceaux de lumière cohérente. Le laser assurera des liaisons à grande capacité. 1, record 20, French, - transmission%20par%20laser
Record 20, Spanish
Record 20, Textual support, Spanish
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