Speckle Reduction for LIDAR Using Optical Phase Conjugation

Bowers, M W ; Kecy, C ; Little, L ; Cooke, J ; Benterou, J ; Boyd, R ; Birks, T

Lawrence Livermore National Laboratory

关键词: 98 Nuclear Disarmament, Safeguards, And Physical Protection;    Absorption;    Detection;    Turbulence;    Chemical Effluents;   

DOI  :  10.2172/15013526
RP-ID  :  UCRL-ID-136326
RP-ID  :  W-7405-ENG-48
RP-ID  :  15013526

美国|英语

来源: UNT Digital Library

【 摘 要 】

Remote detection of chemicals using LIDAR (Light Detection and Ranging) utilizing DIAL (Differential Absorption LIDAR) is now a standard detection technique for both military and civilian activities. We have developed a novel nonlinear optical phase conjugation system that can reduce the effects of speckle noise and atmospheric turbulence on DIAL remote detection systems. We have shown numerically and experimentally that it is possible to increase the signal-to-noise (S/N) ratio for LIDAR systems under certain conditions using optical phase conjugation. This increase in S/N can result in more accurate detection of chemical effluents while simultaneously reducing the time necessary to acquire this information.