Acousto-optic gyrotropic-crystal-based modulator with a rotating polarisation vector

Journal Article · Wed Mar 01 00:00:00 EST 2017 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QEL16194· OSTI ID:22724710

Kotov, V. M.; Averin, S. V.; Kotov, E. V.; Voronko, A. I.; Tikhomirov, S. A.

We study the influence of ellipticity of gyrotropic-crystal eigenwaves on the output characteristics of an acousto-optic (AO) modulator based on the interferometer scheme. The schemes of AO modulators are considered, which provide the polarisation vector rotation frequency fn /2, where f is the frequency of the acoustic wave, and n is the integer. Preference is given to the scheme combining cascade and polarisation-independent diffraction. An experimental layout of the AO modulator operating at f = 44.5 MHz is described, the modulation frequency of the output laser light intensity being 89 MHz. The frequency of the electrical signal from the photodetector is equal to 179.5 MHz. (paper)

• OSTI ID: 22724710
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 47, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CRYSTALS
DIFFRACTION
INTERFEROMETERS
MHZ RANGE
MODULATION
PHOTODETECTORS
POLARIZATION
ROTATION
SIGNALS
SOUND WAVES
VISIBLE RADIATION