Abstract

Results of an experimental program to investigate the properties of an infrared phase conjugation adapative array are described. Both linear and planar adaptive arrays of up to 7 elements using a new integrated frequency phase control technique at 10.6 μm are discussed. The results presented include correction for atmospheric turbulence at ranges of 1, 6, and 9.5 km. Beam broadening induced by turbulence is reduced to the array diffraction limit and target irradiance fluctuations are decreased by a factor of ≈ 20 in strong turbulence. Received irradiance fluctuations are reduced by ≈ 50 db out to 2 kHz. Beam pointing, scanning, and automatic target acquistion and tracking are demonstrated over the 1 mrad array field of view.

© 1977 Optical Society of America

Properties of phase conjugate adaptive optical systems*

Jan Herrmann
J. Opt. Soc. Am. 67(3) 290-295 (1977)

Phase conjugate adaptive optics using perimeter phase measurement

R. R. Butts and C. B. Hogge
J. Opt. Soc. Am. 67(3) 278-281 (1977)

High-power-laser adaptive phased arrays

C. L. Hayes and W. C. Davis
Appl. Opt. 18(24) 4106-4111 (1979)

The multidither principle in adaptive optics

T. R. O’Meara
J. Opt. Soc. Am. 67(3) 306-315 (1977)

An initial evaluation of performance of adaptive optical systems with extended dynamic targets*

G. F. Gurski, N. T. Nomiyama, R. J. Radley, and J. Wilson
J. Opt. Soc. Am. 67(3) 345-350 (1977)