Measurements of optic signals phase structure by means of Bragg acousto-optic interaction

Author

Balakshy, Vladimir I. ; Kostyuk, Dmitry E.

Author_Institution

Dept. of Phys., M.V. Lomonosov Moscow State Univ., Russia

Volume

2

fYear

2005

fDate

12-17 Sept. 2005

Firstpage

234

Abstract

The acousto-optic method of phase object visualization is generalized to the case when an optical wave as well as being spatially phase-modulated, has also amplitude spatial modulation. A special geometry of acousto-optic interaction is proposed for separation of the phase modulation and visualization of the optical wavefront. Basic characteristics of the visualizing system are calculated. It is shown that in the optimal case the distribution of light intensity in the visualized image is proportional to the phase gradient in the acousto-optic interaction plane. The resolution and the contrast of the visualized image are determined primarily by the divergence angle of the acoustic beam. Some examples of computer simulation are presented for illustration of potentialities of this method.

Keywords

acousto-optical correlation; image resolution; optical modulation; phase modulation; Bragg acousto-optic interaction; amplitude spatial modulation; image contrast; image resolution; optic signal phase structure; phase object visualization; spatial phase-modulation; Amplitude modulation; Biomedical optical imaging; High speed optical techniques; Optical diffraction; Optical filters; Optical modulation; Phase measurement; Phase modulation; Transfer functions; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Optoelectronics and Lasers, 2005. Proceedings of CAOL 2005. Second International Conference on

Print_ISBN

0-7803-9130-6

Type

conf

DOI

10.1109/CAOL.2005.1553964

Filename

1553964