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MODULATEUR ACOUSTO-OPTIQUE [1 record]

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Record 1 2001-11-28

English

Subject field(s)
  • Acoustics (Physics)
  • Optics
DEF

A device utilizing acoustooptic interaction ultrasonically to vary the amplitude or the phase of a light beam.

Key term(s)
  • acoustooptic beam modulator
  • acousto-optic beam modulator

French

Domaine(s)
  • Acoustique (Physique)
  • Optique
CONT

Déclenchement acousto-optique. C’est l’effet Bragg qui est mis en jeu; diffraction de la lumière par un milieu traversé par des ondes sonores. Une cellule de Bragg excitée par un transducteur à ultrasons est disposée dans la cavité de Pérot-Fabry. L’excitation de cette cellule dévie le faisceau optique et provoque l’augmentation de pertes désirée.

Spanish

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