Improved performance from noncollinear pumping in a high-reflectivity Brillouin-enhanced four-wave mixing phase conjugator

Author

Ackerman, John R. ; Lebow, Paul S.

Author_Institution

Sachs Freeman Associates, Landover, MD, USA

Volume

25

Issue

3

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

479

Lastpage

483

Abstract

A Brillouin-enhanced four-wave mixing conjugator having reflectivities in excess of 10/sup 6/ for probe inputs of less than 1 nJ is described. Improved performance is obtained by using a pumping geometry which minimizes beam distortion and is not precisely counterpropagating. When adjusted for maximum reflectance, output in the far field is exactly retroreflective with respect to the input. The output can be steered away from 180 degrees C without severe losses in performance by adjustment of the pumping geometry. Such behavior is consistent with a model based on the extended beam overlap geometry.<>

Keywords

optical phase conjugation; optical pumping; reflectivity; stimulated Brillouin scattering; 1 nJ; beam distortion; beam overlap geometry; high-reflectivity Brillouin-enhanced four-wave mixing phase conjugator; improved phase conjugator performance; maximum reflectance; noncollinear pumping; pumping geometry; reflectivities; retroreflective; Four-wave mixing; Geometrical optics; Geometry; Laser beams; Laser excitation; Laser modes; Laser theory; Probes; Reflectivity; Solid modeling;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.18563

Filename

18563