TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Optical disk storage involves the use of a laser beam(e. g., from a helium-neon laser) to write the data on the surface of a metallic disk. The laser beam is tightly focused to form a spot of light, or the optical stylus, which burns tiny pits onto concentric tracks(rings) on the disk to write data. The laser beam scans the pits, which reflect light from the disk to photodetector to read data.  3, record 1, English, - optical%20disk%20storage

Record number: 1, Textual support number: 1 OBS

[Optical disk storage can be, for example, an] optical disk cartridge [or an] optical disk drive.  4, record 1, English, - optical%20disk%20storage

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

The thermal lens effect was discovered when transient power and beam divergence changes in the output of a helium-neon laser [were observed] after placing "transparent" samples in the laser cavity. It is a photothermal effect and results when energy from a laser beam passing through a sample is absorbed, causing heating of the sample along the beam path. The lens is created through the temperature dependence of the sample refractive index.  1, record 2, English, - thermal%20lens%20effect

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Complémentaires de la spectrophotométrie d’absorption, des méthodes nouvelles de spectroscopie laser apparaissent, où l’absorbance est déterminée non par la mesure des photons transmis, mais par celle d’effets secondaires. Dans l’effet de lentille thermique, l’absorption du rayonnement laser provoque une augmentation de température qui modifie l’indice de réfraction; la solution se comporte comme une lentille divergente. La modification de divergence est proportionnelle à la concentration de l’espèce absorbante; elle est déterminée par mesure au centre d’une photodiode de la variation de l’intensité lumineuse d’un faisceau sonde.  1, record 2, French, - effet%20de%20lentille%20thermique

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

A new argon indirect ophthalmoscopic photocoagulator is presented which uses a red helium-neon laser aiming beam. Qn interference filter protects the operator from green or blue-green treatment beam reflections without impairung visualization of the aiming beam or significant retinal anatomy.  1, record 3, English, - photocoagulator

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Dispositif ophtalmologique fonctionnant le plus souvent au laser, qui permet de projeter un faisceau intense sur la choriorétine, l'iris et les vaisseaux rétiniens  1, record 3, French, - photocoagulateur

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A helium-neon or other laser in which an ultrasonic modulation cell is used to impress a frequency-modulated video signal on the output beam of the laser.  1, record 4, English, - frequency%2Dmodulated%20laser

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish