在激光大气传输中利用SBS阈值效应实现小面积信标的研究

Realization of small area beacon using SBS thresholdfor laser propagation in the atmosphere

在理论上建立起将受激布里渊散射(SBS)与激光大气传输过程相结合的激光补偿传输的数学模型,并进行了数值模拟,提出并证明了利用SBS阈值效应可以将相位共轭光会聚到目标上一个小面积上,从而在目标上主动获得小面积信标光斑。利用SBS实现激光大气补偿传输(传输距离250m)的实验研究,证实了上述理论预期。

A mathematical model of laser compensation propagation process by combining the stimulated Brillouinscattering (SBS) and laser propagation in the atmosphere is constructed and the numerical simulation is also conducted. On the basis of realizing a beacon of a small area on an uncooperative and extensive target with SBS threshold, we presented and demonstrated the feasibility of the method to actively obtain the phaseconjugatelight on the target. The experiments of laser propagation with SBS are conducted in case of a 250m distance, which shows that by utilizing the SBS threshold effect the small area beacon could be obtained on the target actively. 