High-stability acousto-optical devices using bulk acoustic waves in TeO2
Abstract
A new acoustooptical modulator for laser Doppler anemometer applications is described which comprises an acoustic wave oscillator using bulk acoustic waves in TeO2. The acoustic wave oscillator involves an acoustic-wave delay line, with the output fed back to the input through an amplifier. Formulas for calculating major system parameters are presented. Experimental results show that in the temperature range from -10 C to +30 C, the diffraction efficiency is 90% for about 0.1 W/sq cm input acoustical intensity, and the conversion losses of the transducers are about 20 dB. It is suggested that a bulk acoustic wave oscillator in TeO2 may be used as a high-stability acoustooptical modulator in a variety of optical devices.
- Publication:
-
Electronics Letters
- Pub Date:
- August 1978
- DOI:
- 10.1049/el:19780363
- Bibcode:
- 1978ElL....14..535P
- Keywords:
-
- Acousto-Optics;
- Laser Anemometers;
- Light Amplifiers;
- Light Modulation;
- Sound Waves;
- Tellurium Compounds;
- Acoustic Velocity;
- Doppler Effect;
- Phase Shift;
- Refractivity;
- Electronics and Electrical Engineering