Abstract
The guided acoustooptical interaction on the (100) plane of GaAs is investigated as a function of waveguide thickness type of mode, acoustic frequency, direction of acoustic wave propagation, and substrate refractive index Our calculated results indicate that best efficiency is obtained for TE0 → TE0 optical modes and for acoustic surface wave propagating along the 〈011〉 direction at a waveguide thickness close to cutoff Under these conditions, approximately 75 mW of acoustic power is required for 100% diffraction. For a transducer aperture giving 50 Ω of radiation resistance, the rf bandwidth of the diffraction is limited essentially by the frequency bandwidth of the interdigital transducer. A comparison of the calculated results with experimental data at 1.06-μm optical wavelength is also given.
© 1976 Optical Society of America
Full Article | PDF ArticleMore Like This
A. Alippi, A. Palma, L. Palmieri, and G. Socino
Appl. Opt. 15(10) 2400-2404 (1976)
L. T. Nguyen and C. S. Tsai
Appl. Opt. 16(5) 1297-1304 (1977)
T. Yano and A. Watanabe
Appl. Opt. 15(9) 2250-2258 (1976)