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Proceedings Paper

Nonlinear Optical Phase Conjugation For Laser Systems
Author(s): Victor Wang
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Paper Abstract

This paper deals with certain nonlinear effects that,can directly generate a wavefront which is the phase conjugate of the incident field. These phenomena can be exploited in pulsed laser systems to remove aberrations in the optical train as well as aberrations arising from turbulence in the atmosphere. We discuss our measurements of the effectiveness of this conjugation process using a ruby laser and stimulated Brillouin scattering in a CS2 waveguide device. Measurements are made of the divergence angle of the beam after correction as a function of interaction length. The application of conjugate processes realizable in SBS, SRS, parametric down conversion, and four-wave mixing is considered for typical CO2 laser systems. System gain, backscatter limitations and parasitic oscillation are discussed for typical pulsed amplifier systems. Amplified spontaneous emission and unwanted glint returns from optical defects appear to be the most serious limitations.

Paper Details

Date Published: 20 October 1977
PDF: 11 pages
Proc. SPIE 0122, Advances in Laser Engineering I, (20 October 1977); doi: 10.1117/12.955788
Show Author Affiliations
Victor Wang, Hughes Research Laboratories (United States)


Published in SPIE Proceedings Vol. 0122:
Advances in Laser Engineering I
Malcolm L. Stitch; Eric J. Woodbury, Editor(s)

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