古斯-汉欣效应中光束形变的理论与实验研究  

Theoretical and experimental study on the shape of laser beam in the Goos-Hnchen effect

作　　者：戚珉[1] 肖平平[2] 胡红武[2] 

机构地区：[1]宜春学院数学与计算机科学学院,宜春336000 [2]宜春学院物理科学与工程技术学院,宜春336000

出　　处：《激光技术》2012年第3期402-404,共3页Laser Technology

基　　金：国家自然科学基金资助项目(61168002);江西省教育厅资助项目(JXJG-08-15-28)

摘　　要：在研究双面金属包覆波导对古斯-汉欣（Goos-Hnchen,G-H）位移的增强效应过程中,观察到了光束在发生古斯-汉欣侧向位移的同时光斑能量会重新分布的现象。为了研究其产生机理,采用高斯光束模型对其进行了模拟计算和实验验证,得到了在波长调谐时,反射光经历不同G-H位移时的光斑形态。结果表明,理论分析和实验结果是完全一致的,并预示着实验中用位置灵敏探测器在观测G-H位移时的局限性。这一结果预计对利用古斯-汉欣效应制作的各类光学器件的研究及应用是有帮助的。In the investigation of Goos-Hnchen（G-H） displacement enhanced by symmetrical metal-cladding waveguides,a phenomenon happens that the energy of Gaussian beam redistributes in the occurrence of the G-H lateral displacement.In order to study its generation mechanism,the computation simulation and experimental validation were performed simultaneously based on the model of Gaussian beam.The facula shapes were obtained corresponding to the various G-H displacements on the condition of tuning wavelength of the incident beam.The theoretical analysis and experimental results matched well and the of position sensitive detector（PSD） was limited in observation of G-H displacement.The results are useful for the research and application of optical devices based on Goos-Hnchen effect.

关 键 词：几何光学 古斯-汉欣位移 光波导 高斯光束 

分 类 号：O435.1[机械工程—光学工程]