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Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Laser force microscope senses topography by moving a tungsten or silicon probe across a sample(typically a microelectronic component) at a height of a few nanometers. The tip is set vibrating at close to its resonance frequency. Attractive forces... called van der Waals attractions and the surface tension of water that condenses between tip and sample, pull on the tip, changing its resonance frequency and so reducing its vibration amplitude. The variation in the forces, and hence in tip travel, reveals surface relief. A laser probe tracks the tip by means of a beam that is split into two. One of the beams is reflected through a stationary prism; the other passes through a Bragg cell--a device that shifts the beam's frequency--and is reflected from the back of the probe. The beams are recombined, and their interference produces a signal(at the Bragg-cell frequency) that measures the tip vibration.  1, record 2, English, - laser%20force%20microscope

Record number: 2, Textual support number: 1 PHR

Scanning laser force microscope.  2, record 2, English, - laser%20force%20microscope

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Electromagnetically induced transparency in a sodium vapour cell.... In our experiment, sodium atoms are excited on the D_1-line with laser radiation containing two components with a frequency difference close to that of the two hyperfine ground states of sodium(1. 772 GHz). Such an excitation leads to coherent trapping of atomic population in "dark" superpositional states, which dramatically reduces the absorption of light.  3, record 3, English, - vapour%20cell

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

GOLF [Global Oscillations at Low Frequencies] est un spectromètre à résonance, constitué d'une cellule à vapeur de sodium placée dans un champ magnétique modulé. Le phénomène de résonance concerne l'absorption et l'émission des photons solaires sélectionnés dans la bande de longueur d'onde des raies d'absorption du sodium.  2, record 3, French, - cellule%20%C3%A0%20vapeur

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 OBS

The gyro... is a rate-integrating gyro that does not use a spinning mass. Instead, it measures angular motion by measuring the frequency difference between two contrarotating laser beams. Mirrors are used to reflect each beam around an enclosed triangular path, which produces a "laser-in-ring" configuration.  2, record 4, English, - triangular%20path%20laser%20gyro

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 OBS

Gyrométrie par laser. Le principe de fonctionnement des gyromètres laser est fondé sur l'exploitation de la condition (nécessaire) de résonance de la cavité optique utilisée; [...] Gyromètre laser. [...] L'appareillage comporte une partie optique [...] et une partie électronique [...] Trajet optique. Il est de forme triangulaire [...] ou carrée. La forme triangulaire ne nécessite que trois miroirs, la forme carrée conduit à un facteur géométrique S/p [...] plus favorable.  1, record 4, French, - gyrom%C3%A8tre%20laser%20triangulaire

Record number: 4, Textual support number: 2 OBS

Voir figure 8 dans la source TECHN.  2, record 4, French, - gyrom%C3%A8tre%20laser%20triangulaire

Record 4,  Textual support,  Spanish