用于铯原子受激拉曼绝热输运过程的光源的产生  

Generation of Raman laser for STIRAP of Cs atom

作　　者：李卓恒[1] 李刚[1] 张玉驰[1] 张鹏飞[1] 赵冬梅[1] 郭龑强[1] 王军民[1] 张天才[1] 

机构地区：[1]山西大学光电研究所量子光学与光量子器件国家重点实验室,山西太原030006

出　　处：《光学学报》2011年第1期38-43,共6页Acta Optica Sinica

基　　金：国家自然科学基金(10974125;60808006;60978017和60821004);教育部新世纪优秀人才支持计划(NCET-07-0524)资助课题

摘　　要：受激拉曼绝热输运(STIRAP)是一种有效制备和控制原子态的技术,在原子操控和量子信息中具有重要意义,最近几年得到广泛关注。研制用于特定原子的拉曼激光是实现该过程的重要一步。研究了利用光纤波导调制器及干涉滤波器等组成的系统实现用于铯原子STIRAP过程的光源的方法。通过直接调制高频光纤调制器获得正负一级边带,并利用两个特殊设计的干涉滤波器和高稳定的控温系统,成功地分离出频率相差9.19GHz的调制边带。边带与载波的对比度达到21dB。该方法的特点是获得的两束光可以独立控制、失谐量易于精确操控、输出稳定。得到了两边带各120μW的连续拉曼激光输出,经过独立调制后可广泛应用于原子态的制备和相干操控过程。The stimulated Raman adiabatic passage（STIRAP） is an important technique in controlling the atomic states and it has been widely used in atom manipulation and quantum information.Obtaining Raman laser is the first step to demonstrate the STIRAP for atoms.A system is presented for generating Raman laser for STIRAP process for Cs atom based on waveguide fiber modulation with high frequency and two pieces of interference filter.Two sidebands with frequency difference of exact 9.19 GHz are separated from the carrier and each of them can be controlled independently.The distinction ratio between the sidebands and the carrier is 21 dB.The power of each sideband is about 120 μW and the fluctuation is less than 2% in ten minutes.This system could be used in atomic state preparation and coherent control of the atomic states.

关 键 词：量子光学 拉曼激光 光纤调制器 干涉滤波器 受激拉曼绝热输运 

分 类 号：O431.2[机械工程—光学工程]