格兰-傅科棱镜对单模高斯光束的影响

Effects on single-mode beams of Glan-Foucault prisms

为了研究格兰-傅科棱镜对单模高斯光束的影响,分析了棱镜空气隙中光的干涉现象,结果表明:对于某一波长的入射光,当空气隙的厚度一定时,透射光强随棱镜结构角的变化作周期性振荡;当结构角一定时,透射光强随棱镜空气隙厚度的变化作周期性变化;且透射高斯光束的形状也随结构角以及空气隙厚度的改变发生变化;理论分析的结果还给出,对于结构角和空气隙厚度给定的成品棱镜,透射光束随入射角的变化呈周期性振荡,且棱镜对光束形貌的影响与入射光的束腰半径有关,据此,设计实验对理论结果进行实验验证,实验结果证明了理论分析的正确性。

In order to study the effects of Glan-Foucault prisms on single-mode Gaussian beams the interference effects happened at the air-spaced cementing layer are analyzed.The results reveals that the transmission light intensity oscillates in period by singly changing the prism structure angle or by singly changing the thickness of the air-gap layer.The shape of Gaussian beam also changes with the structure angle and thickness of air-gas layer.The theory analysis also reveals that the transmission beam oscillates...