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- Title
Signal Recording in Acoustooptical Imaging of Scattering Media.
- Authors
Solov’ev, A. P.; Perchenko, M. I.; Sinichkin, Yu. P.; Zyuryukina, O. V.
- Abstract
An expression for a signal at the ultrasonic frequency from a photodetector arising when diffraction waves at the cathode mix is obtained for the case when the optical and acoustic beams are space-limited and Bragg angles are small. The alternating current generated when the scattering medium is crossed by a focused 3-MHz ultrasonic beam and illuminated by a cw He-Ne laser is measured. Satisfactory agreement between experimental results and those calculated from the formulas obtained indicates that our model treating acoustooptical interaction in the medium in terms of Raman-Nath diffraction is valid. Conditions for measuring the alternating current (which is a parameter of acoustooptical imaging) that are optimal from the viewpoint of maximizing the signal and signal-to-noise ratio are predicted theoretically and corroborated experimentally.
- Subjects
ACOUSTOOPTICS; SCATTERING (Physics); OPTICAL diffraction
- Publication
Technical Physics, 2002, Vol 47, Issue 8, p996
- ISSN
1063-7842
- Publication type
Article