Abstract
An analysis is made of an infrared chopper based on the refraction of light rays by a low frequency (~1-MHz) standing acoustic wave in a block of material such as germanium. Computer programs are described for tracing the rays through the acoustic field and for calculating the contrast ratio at a small aperture detector following the chopper. Experimental results obtained with a germanium device are in good agreement with the theory.
© 1981 Optical Society of America
Full Article | PDF ArticleMore Like This
Demetri Psaltis and B. V. K. Vijaya Kumar
Appl. Opt. 20(4) 601-605 (1981)
Tom Manwell
J. Opt. Soc. Am. 59(4) 391-394 (1969)
Lyman A. Page, Edward S. Cheng, and Stephan S. Meyer
Appl. Opt. 31(1) 95-100 (1992)