聚焦透镜球差对受激布里渊散射相位共轭光波阵面影响的理论计算

Theoretical Computation of the Effect on the Stimulated Brillouin Scattering Phase Conjugation Light Wave Plane by the Focus Lens Spherical Aberration

受激布里渊散射(SBS)已成功的应用于激光光束质量改善、脉宽压缩、激光束组束及实时自适应光学等领域,单池聚焦形式的SBS相位共轭镜一直是人们研究的一个热点,人们对其阈值特性,脉宽压缩特性及相位共轭特性等进行了深入而广泛的研究,但关于SBS共轭镜中透镜像差对相位共轭光的影响却鲜有报道,本文在SBS及像差理论的基础上,主要分析聚焦透镜像差中的球差对共轭光波阵面的影响。以平行光平面波为基础对不同透镜进行计算,推导出入射光口径与透镜球差的关系,进而推导出光线返回的光程差与入射口径的函数关系。并且给出一组不同透镜的数据,画出相应的关系曲线。

Stimulated Brillouin Scattering（SBS） has been successfully applied in many fields,such as the laser beam quality improvement,the pulse compression,the laser beam combination and the real time self-adapting optics,etc.Single-cell SBS phase conjugation mirror（PCM） has always been a research focus,and its characteristics the threshold,the pulse compression and the phase conjugation have been studied comprehensively.However,there are few researches on the influence of lens spherical aberration on the SBS conjugations.On the base of SBS and aberration theory,the paper focuses on the influence of spherical aberration on the conjugation wave plane.Based on the parallel light plane wave,the computation was performed on the different lens and the relationship between the aperture of incident light and lens spherical aberration was deduced,which helped derive the relation between optical path of return light and the aperture of incident light.Moreover,the paper provides the parameters of different lens and the corresponding correlation curve.