Influence of thermal deformations of resonators on propagation properties of laser annular beams through turbulent atmosphere
作者： Yufeng Peng , Fang Peng , Junpeng Han
DOI: 10.1016/J.OPTLASTEC.2012.05.039
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摘要: Abstract Based on the laser field from a positive confocal unstable resonator, considering influence of thermal distortion internal resonator mirror annular beam, propagation characteristics beam through turbulent atmosphere are investigated by means fast Fourier transform algorithm (FFT). The intensity distributions output far-field obtained to analyze atmosphere, which is function about different distances. results show that peak pattern becomes depressed and spread far diagram patterns broadened under increasing transmission distance resonator. β -parameter strehl ratio introduced estimate quality characteristics. It found strong turbulence influences much less obviously than weak with distortion. In same atmospheric conditions certain distance, greater is, worse is.
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