GSM光束在负折射率介质中的传输特性研究  

Study on propagation properties of Gaussian-Schell model beams in negative index medium

作　　者：许森东[1] 徐弼军[1] 

机构地区：[1]浙江科技学院理学院,杭州310023

出　　处：《激光技术》2014年第5期595-598,共4页Laser Technology

基　　金：国家自然科学基金资助项目(51005212);浙江省教育厅科研资助项目(Y201120062)

摘　　要：为了研究高斯-谢尔模型光束在负折射率介质中的传输特性,利用矩阵光学理论、衍射积分理论、相干偏振统一理论推导了高斯-谢尔模型光束通过负折射率介质中传输交叉谱密度方程的解析表达式,并利用该解析表达式得到了高斯-谢尔模型光束通过负折射率介质的谱密度和谱相干度。结果表明,高斯-谢尔模型光束的谱密度和谱相干度都可以通过负折射率介质的工作频率调控。此研究结果提供了一种新的调控光传输的方法和技术。In order to study the propagation characteristics of Gaussian-Schell model（GSM） beams in negative index medium, the analytical expression was obtained for the cross-spectral density function of GSM beam passing through negative index medium based on the matrix optics theory, diffraction integral theory and unification theory of coherence and polarization. The spectral density and the spectral coherence degree of the beam passing through the negative index medium were obtained with the formula. Numerical examples show that both the spectral density and the coherence spectral degree of GSM beam can be modulated by the frequency of the negative index medium. The results provide a new modulation method for the beam propagation.

关 键 词：激光物理 高斯-谢尔模型光束 负折射率介质 谱密度 谱相干度 

分 类 号：O435[机械工程—光学工程]