铷775.9nm激光感生色散光学滤波器  

A Rubidium Laser Induced Dispersion Optical Filter at 775.9 nm

作　　者：何竹松[1] 掌蕴东[1] 刘双强[1] 张静[1] 袁萍[1] 

机构地区：[1]哈尔滨工业大学光电子技术研究所可调谐激光技术国家级重点实验室,黑龙江哈尔滨150080

出　　处：《中国激光》2008年第4期488-490,共3页Chinese Journal of Lasers

基　　金：国家自然科学基金(60272075;60478014)资助项目

摘　　要：为提高自由空间通信、遥感、激光雷达等系统的信噪比,研究了铷775.9 nm激光感生色散光学滤波器(LIDOF).通过780 nm线偏振抽运光选择性激发基态原子,使其在激发态子能级间布居不均衡,从而引起激发态的圆二色向性和圆双折射,使与激发态共振的775.9 nm探测光偏振态发生旋转,实现滤波传输.获得的峰值透射率为4%,带宽约为605 MHz,同时,得到了峰值透射率随池温和抽运功率的变化关系.In order to improve the signal-to-noise ratios for free-space communication, remote sensing and lidar systems, a rubidium laser induced dispersion optical filter （LIDOF） at 775.9 nm was experimentally studied. Owing to unbalance of occupancy among in sublevels of the excited state, which is caused by selective excitation of a linearly polarized pump beam at 780 nm, dichroism and birefringence of the excited state are induced. So the polarization direction of 775.9 nm probe beam is rotated and transmitted. The filter has a peak transmission of 4% with a single bandwidth of 605 MHz. The peak transmission versus the cell temperature and pump intensity is also given.

关 键 词：物理光学 光学滤波器 超窄带宽 圆二色向性 圆双折射 铷 

分 类 号：O436.3[机械工程—光学工程]