Title :
Acoustic scattering of light in a Fabry-Perot resonator
Author :
Cohen, M.G. ; Gordon, E.I.
Author_Institution :
Bell Telephone Laboratories, Murray Hill, N. J.
Abstract :
A theory of acoustic scattering of light in a Fabry-Perot resonator is described. The theory predicts the optimum acoustic scattering frequencies, the acoustic bandwidth, and the scattering enhancements as a function of the cavity geometry. The calculation is based on the formalism developed by Gordon and Rigden for the Fabry-Perot Electro-optic Modulator. Experiments are discussed which yield results in excellent agreement with the theory. Acoustic phase velocities can be determined to 4-place accuracy. The experiments illustrate that narrow-band modulators (∼ 10 mc/s) can be made to produce 100% amplitude modulation with acoustic powers less than 50 milliwatts.
Keywords :
Acoustic devices; Acoustic scattering; Amplitude modulation; Bandwidth; Circuit testing; Coupling circuits; Fabry-Perot; Impedance; Noise figure; Noise reduction;
Conference_Titel :
Electron Devices Meeting, 1965 International
DOI :
10.1109/IEDM.1965.187582
