Abstract

Several acousto-optical imaging systems are described in the literature where the image information is obtained by scanning a focused beam over a flexible mirror located at the acoustical image plane. The small dynamic deformation of the mirror induces a shallow phase modulation in the scanning beam. This paper describes a time-delay filter that transforms the phase-modulated beam into an amplitude-modulated beam and compares the proposed method with other demodulation schemes described in the literature. Specifically, stability, resolution, sensitivity, and frequency responses are considered.

© 1979 Optical Society of America

Lifetime measurements for excited states of rare-earth atoms using pulse modulation of a cw dye-laser beam

M. Gustavsson, H. Lundberg, L. Nilsson, and S. Svanberg
J. Opt. Soc. Am. 69(7) 984-992 (1979)

Scattering of guided optical beams by surface acoustic waves in thin films

R. Normandin, V. C-Y. So, N. Rowell, and G. I. Stegeman
J. Opt. Soc. Am. 69(8) 1153-1165 (1979)

Diffraction theory of laser read-out systems for optical video discs

H. H. Hopkins
J. Opt. Soc. Am. 69(1) 4-24 (1979)

Optical imaging using aperture synthesis

H. P. Gush
J. Opt. Soc. Am. 69(1) 187-191 (1979)

Imaging in the presence of random wave aberrations

Arthur M. Schneiderman and Douglas P. Karo
J. Opt. Soc. Am. 69(5) 717-724 (1979)