高斯谢尔模型光束在EIT原子气体中的传输特性研究  

Propagation of Gaussian Schell-model beam in electromagnetically induced transparency atomic vapor

作　　者：许森东[1] 徐弼军[1] 陆璇辉[2] 

机构地区：[1]浙江科技学院理学院,浙江杭州310023 [2]浙江大学光学所,浙江杭州310027

出　　处：《红外与激光工程》2013年第12期3223-3227,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金(51005212);浙江省教育厅科研项目(Y201120062);全国教育信息技术研究"十二五"规划2013年度青年课题(136241261);2013年度浙江省公益性技术应用研究计划(2013C31103)

摘　　要：为了研究高斯-谢尔模型(GSM)光束在电磁感应透明(EIT)材料中的传输特性,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GSM光束通过EIT材料的传输交叉谱密度方程的解析表达式。该表达式可以用于计算和研究GSM光束通过EIT原子气体的谱密度和相干度的变化。分析显示GSM光束的谱密度和相干度都可以通过控制光的拉比频率调控。此研究结果提供了一种新的调控光传输的方法和技术,同时该发现也为控制部分相干光的谱密度和相干度提供了一种新方法。In order to study the propagation characteristics of Gaussian Schell-model （GSM） beams in electromagnetically induced transparency atomic vapor, the analytical expression was obtained for the cross-spectral density function of a Gaussian Schell-model beam passing through the electromagnetically induced transparency atomic vapor based on the matrix optics theory, diffraction integral theory and unified theory of coherence and polarization. The formula can be used in the study of the changes in the spectral density and spectral degree of coherence of the beam through the EIT atomic vapor. Numerical examples show that both the spectral density and the spectral degree of coherence of the GSM beam can be modulated by the Rabi frequency of the control light. The results have been provided a new method and technique for modulation the beam propagation. The findings indicate a new technique for controlling the spectral density and the spectral degree of coherence of the partially coherent light beam.

关 键 词：电磁感应透明 拉比频率 谱密度 谱相干度 

分 类 号：O439[机械工程—光学工程]