热晕小尺度不稳定性实验研究
EXPERIMENT OBSERVATION OF SMALL-SCALE THERMAL-BLOOMING INSTABILITY
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摘要: 本文报导了STRS不稳定性的模拟实验结果,研究了正弦强度分布的小尺度扰动源在热晕介质中传播的不稳定性发展情况,对不同扰动空间周期、不同光功率下小尺度不稳定性的增长做了一些实验研究,证实了激光在介质传播中,热晕将导致小尺度不稳定性的指数增长。Abstract: The experimental simulation results of instability of Stimulated Thermal Rayleigh Scattering (STRS) are reported in the paper, which include the studies on the process of instability of the sinusoidal perturbation source propagating in the thermal-blooming medium and the experimental studies on the increase of the small-scale thermal-blooming instability under different perturbation frequencies and different light power, and thus proves that the small-scale instability caused by thermal-blooming increases exponentially as laser propagation in the absorbing medium.
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