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Fiche 1,  Justifications,  Anglais

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The process of generating a bright output beam by merging independent input beams of individually diffusing relative phases by locking them to each other.  2, fiche 1, Anglais, - coherent%20beam%20combining

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

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A device that converts input power into a very narrow, intense beam of coherent visible or infrared radiation.  3, fiche 2, Anglais, - laser

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A laser is a maser which operates at optical frequencies. It is a device which produces an intense beam of visible or infrared coherent light by pumping atoms to ever higher energy levels and allowing them to oscillate in an optical resonator until the energy level is high enough that a constant stream of photons is emitted.  4, fiche 2, Anglais, - laser

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Some prefer the term "optical maser," in which the letter "m" stands for "molecular" instead of its originally assigned denotation of "microwave." While this viewpoint is logical, ... the word "laser" ... has the virtue of brevity and has won popular acceptance.  2, fiche 2, Anglais, - laser

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L.A.S.E.R [or LASER] is an acronym which stands for "Light Amplification by Stimulated Emission of Radiation," a term which describes the fundamental operation of a laser.  5, fiche 2, Anglais, - laser

Fiche 2,  Justifications,  Français

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Dispositif qui transforme la puissance d'entrée en un faisceau extrêmement étroit et intense de radiation cohérente dans le visible ou l'infrarouge.  3, fiche 2, Français, - laser

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Les lasers sont la transposition des masers dans la gamme des fréquences optiques : ce sont des appareils qui engendrent des ondes lumineuses cohérentes.  4, fiche 2, Français, - laser

Fiche 2,  Justifications,  Espagnol

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Instrumento que permite que impulsos (intensos) de ondas luminosas se concentren en un rayo extremadamente estrecho hacia un objetivo.  3, fiche 2, Espagnol, - l%C3%A1ser

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láser: La Fundación del Español Urgente (Fundéu BBVA), con el asesoramiento de la Real Academia Española, indica que "láser" es la adaptación al español del acrónimo inglés "laser" ("light amplification by stimulated emission of radiation" o "amplificación de luz por emisión estimulada de radiación") y lleva tilde en la "a" por tratarse de una palabra llana acabada en una consonante distinta de "n" y "s"; el plural de "el láser" es "los láseres", no "los láser", "los lásers" ni "los lasers".  4, fiche 2, Espagnol, - l%C3%A1ser

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dispositivo láser: La Fundación del Español Urgente (Fundéu BBVA), con el asesoramiento de la Real Academia Española, explica que cuando el sustantivo "láser" aparece en aposición a otro nombre, como en "rayo láser", permanece invariable al hacer el plural de esa expresión: "los rayos láser".  4, fiche 2, Espagnol, - l%C3%A1ser

Fiche 3,  Justifications,  Anglais

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Each feed cluster is fed via a Butler-like matrix from equally excited power amplifiers. Beam selection is provided by low-level phase-only control at the input to the amplifiers.  2, fiche 3, Anglais, - feed%20cluster

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Fiche 4,  Justifications,  Anglais

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A second order non-linear optical process … based on the annihilation of two input photons at frequencies [omega subscript 1] and [omega subscript 2] while, simultaneously, one photon at frequency [omega subscript 3] is generated.  3, fiche 4, Anglais, - sum%2Dfrequency%20generation

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Sum Frequency Generation Spectroscopy(SFG) is a technique used to analyze surfaces and interfaces. This spectroscopy method utilizes sum frequency generation, where two light beams mix at a surface and generate an output beam with a frequency equal to the sum of the two input frequencies. From the experiment setup and the output beam, one can deduce the composition, orientation distributions, and some structural information of molecules on a surface. SFG has advantages in its ability to be monolayer surface sensitive, ability to be performed in situ(for example aqueous surfaces and in gases), and not causing much damage to the sample surface.  3, fiche 4, Anglais, - sum%2Dfrequency%20generation

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In order that the sum-frequency generation takes place it is necessary that the following two conditions happen: 1. Energy conservation … 2. Momentum conservation …  3, fiche 4, Anglais, - sum%2Dfrequency%20generation

Fiche 4,  Justifications,  Français

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Technique d’optique non linéaire développée […] pour sonder in situ et sélectivement les espèces adsorbées à l’interface entre deux milieux condensés, la seule contrainte étant la transparence d’une des phases.  3, fiche 4, Français, - g%C3%A9n%C3%A9ration%20de%20la%20fr%C3%A9quence%20somme

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Cette technique est obtenue par mixage non linéaire (synchronisation) d’une onde laser visible fixe (laser YAG [en grenat d'yttrium et d'aluminium] doublé) et d’une onde laser infrarouge accordable (laser à électrons libres). Le signal de fréquence somme devient résonnant quand la fréquence infrarouge est voisine de celle d’un mode de l’adsorbat.  3, fiche 4, Français, - g%C3%A9n%C3%A9ration%20de%20la%20fr%C3%A9quence%20somme

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

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A camera tube in which a charge image corresponding to the optical image input grows in magnitude on the target until neutralised by the scanning beam.  2, fiche 5, Anglais, - storage%20camera%20tube

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This occurs in all the camera tubes such as the iconoscope, image iconoscope, orthicon, image orthicon and vidicon which have been successfully used in television services. Storage occurs by virtue of the capacitance of the target and it brings about a considerable increase in the sensitivity of the tube. In fact it was not until the advantage of the storage principle was appreciated that tubes sensitive enough for use in television services became possible.  2, fiche 5, Anglais, - storage%20camera%20tube

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storage camera tube: term officially approved by the Electronics and Telecommunications Terminology Committee.  3, fiche 5, Anglais, - storage%20camera%20tube

Fiche 5,  Justifications,  Français

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tube analyseur à mémoire : terme uniformisé par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).  3, fiche 5, Français, - tube%20analyseur%20%C3%A0%20accumulation

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Fiche 6,  Justifications,  Anglais

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During writing, the pattern of photoelectrons generated at the photocathode by the input light is imaged onto the target as a halftone potential pattern generated by secondary electrons. Scanning of the target surface by the reading beam may be accomplished either during writing or as a later step. As in other vidicon tubes, capacitive discharge of the target to cathode potential in reading automatically erases the target and leaves it prepared for a new image.  1, fiche 6, Anglais, - sec%20vidicon%20tube

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Fiche 7,  Justifications,  Anglais

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A linear accelerometer with one or more proof masses constrained by one or more force sensitive beam resonators. The resultant change in oscillation frequency is a function of input acceleration. The resonators are often configured as differential pairs for common mode error rejection.  2, fiche 7, Anglais, - vibrating%20beam%20accelerometer

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... in 1991, NRL [Naval Research Laboratory] assisted a defense contractor by using ion implantation to improve the performance of an experimental vibrating beam accelerometer (a guidance instrument). It will result in an increase in guidance reliability and accuracy, as well as a reduction in the weight of guidance systems.  3, fiche 7, Anglais, - vibrating%20beam%20accelerometer

Fiche 7,  Justifications,  Français

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La précision des centrales à inertie conditionne directement celle de la trajectoire du missile. En effet, la phase du vol pendant laquelle on peut guider le missile se limite à la phase propulsée, qui dure de 100 à 200 secondes, alors que la phase balistique (non propulsée), où le missile est soumis à la seule attraction terrestre, dure [...] de 1 000 à 2 000 secondes. Aujourd'hui, les limites technologiques des centrales inertielles de type pendulaire sont atteintes et il est envisagé d'utiliser d'autres types de capteurs pour améliorer la précision, tels que des accéléromètres à poutre vibrante.  2, fiche 7, Français, - acc%C3%A9l%C3%A9rom%C3%A8tre%20%C3%A0%20lame%20vibrante

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Il existe depuis une dizaine d'années de petits accéléromètres à coût acceptable. Il existe plusieurs grands principes : Muruta produit le Gyrostar, un prisme excité par piézo, utilisant la force de Coriolis qui donne trois vitesses angulaires. [...] Les autres fabricants utilisent des lames ou poutres vibrantes donnant des accélérations perpendiculaires aux plans de vibration. Un barreau vibrant lesté, est excité par un piézo, un deuxième piézo collé sur la face opposée de la lamelle recueille le signal de vibration. En cas d'accélération perpendiculaire au plan de la lame, la sinusoïde reçue est déformée, le mouvement étant accéléré dans le sens du déplacement, freiné dans l'autre. Les signaux excitation et réponse sont combinés dans un soustracteur, une manipulation donne un signal qui pilote un convertisseur à PWM (Pulse Width Modulation). Le rapport cyclique variable donne l'accélération.  3, fiche 7, Français, - acc%C3%A9l%C3%A9rom%C3%A8tre%20%C3%A0%20lame%20vibrante

Fiche 7,  Justifications,  Espagnol

Fiche 8,  Justifications,  Anglais

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... The smart antenna consists of an eight-element uniform linear array, eight transceiver trains and the adaptive antenna array processor(AAAP).... The AAAP performs four main tasks :(1) Direction-of-arrival(DOA) estimation from the received input data in the uplink with a high-resolution estimator.(2) A DOa identification classifies the DOAs and decides whether a wavefront(DOA) belongs to a user or to an interferer.(3) A tracker follows each nominal DOA(multipath component) of the user. The tracker does not only include averaging of the DOAs, but also measures the reliability of each multipath.(4) Signal reconstruction and beamforming, where a b beamforming algorithm forms an antenna pattern with a main beam steered into the direction of the strongest reliable user multipath, while simultaneously minimizing the influence of the interfering wavefronts.  2, fiche 8, Anglais, - adaptive%20antenna%20array%20processor

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Fiche 9,  Justifications,  Français

Fiche 9,  Justifications,  Espagnol

Fiche 10,  Justifications,  Anglais

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a device that takes as its input a collimated beam of narrowband light, typically from a laser, and amplifies it.  1, fiche 10, Anglais, - single%2Dpass%20light%20amplifier

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Fiche 10,  Justifications,  Espagnol

Fiche 11,  Justifications,  Anglais

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Laser : An active electron device that converts input power into a very narrow, intense beam of coherent visible or infrared light; the input power excites the atoms of an optical resonator to a higher energy level, and the resonator forces the excited atoms to radiate in phase. Derived from light amplification by stimulated emission of radiation.  2, fiche 11, Anglais, - heat%20laser

Fiche 11,  Justifications,  Français

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L'irradiation laser sur les milieux biologiques a deux conséquences : des effets thermiques (une très forte chaleur est dégagée au point d'impact), les mieux connus, et des effets non thermiques encore imparfaitement connus. D'une façon générale, ce sont les premiers qui sont employés en médecine.  2, fiche 11, Français, - laser%20%C3%A0%20effet%20thermique

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Il semble qu'à côté de l'effet purement thermique du laser, des effets peuvent se manifester sur les grosses molécules et les enzymes de la matière vivante (effets chimiques).  3, fiche 11, Français, - laser%20%C3%A0%20effet%20thermique

Fiche 11,  Justifications,  Espagnol

Fiche 12,  Justifications,  Français

Fiche 12,  Justifications,  Espagnol