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28 May 1999 Wide field of view coherent detection
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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.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);

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