Wide field of view coherent detection

Dominique Delautre; Sebastien Breugnot; Vincent Laude

doi:10.1117/12.351367

28 May 1999 Wide field of view coherent detection

Dominique Delautre, Sebastien Breugnot, Vincent Laude

Proceedings Volume 3707, Laser Radar Technology and Applications IV; (1999) https://doi.org/10.1117/12.351367
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

We present the concept of a wide-field-of-view and atmospheric- distortion-insensitive coherent detection. We propose to mix a local oscillator plane wave and a focused backscattered signal on the detector. In first approximation, the field-of-view is only limited by the size of the detector. An original experimental set- up at (lambda) equals 633 nm is presented to validate this technique. We control the phase of the backscattered signal using a liquid-crystal spatial light modulator (SLM). This permits us to steer or to distort the wave front of the backscattered signal in order to measure and compare the field-of-view and the atmospheric perturbations sensitivity of the two set-ups. We will present the performances (wide field-of-view, distortion sensitivity, . . .) of our architecture.

Citation Download Citation

Dominique Delautre, Sebastien Breugnot, and Vincent Laude "Wide field of view coherent detection", Proc. SPIE 3707, Laser Radar Technology and Applications IV, (28 May 1999); https://doi.org/10.1117/12.351367

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