Combination of the sodium and Rayleigh laser guide stars in adaptive compensation of atmospheric turbulence

Jixiang Yan; Xin Yu; Dazun Zhao

doi:10.1117/12.332417

7 December 1998 Combination of the sodium and Rayleigh laser guide stars in adaptive compensation of atmospheric turbulence

Jixiang Yan, Xin Yu, Dazun Zhao

Author Affiliations +

Proceedings Volume 3494, Atmospheric Propagation, Adaptive Systems, and Lidar Techniques for Remote Sensing II; (1998) https://doi.org/10.1117/12.332417
Event: Remote Sensing, 1998, Barcelona, Spain

Abstract

When a laser beam is used to produce a sodium guide star, a Rayleigh guide star can be got as a 'by-product' with the temporal-gating method. In the case of the atmospheric phase distortion is confined to two thin turbulent layers, the sodium guide star is used to measure both the low-altitude and the high-altitude phase distortion (phi) _b while the Rayleigh guide star provides a suitable probe signal for the contribution (phi) _l of low-altitude turbulence layer. The wavefront distortion (phi) _l of low-altitude turbulence layer. The wavefront distortion (phi) _h causing by the high-altitude turbulence layer alone is then easy obtainable from (phi) _l and (phi) _b. The multiconjugate correction system could be founded upon these.

Citation Download Citation

Jixiang Yan, Xin Yu, and Dazun Zhao "Combination of the sodium and Rayleigh laser guide stars in adaptive compensation of atmospheric turbulence", Proc. SPIE 3494, Atmospheric Propagation, Adaptive Systems, and Lidar Techniques for Remote Sensing II, (7 December 1998); https://doi.org/10.1117/12.332417

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