首页 | 本学科首页   官方微博 | 高级检索  
     检索      

液晶相位可变延迟器对自旋极化电子束极化方向的调制
引用本文:丁海兵,庞文宁,刘义保,尚仁成.液晶相位可变延迟器对自旋极化电子束极化方向的调制[J].物理学报,2005,54(9):4097-4100.
作者姓名:丁海兵  庞文宁  刘义保  尚仁成
作者单位:清华大学物理系,极化物理实验室,北京 100084
基金项目:国家自然科学重点基金(批准号:10134010)资助的课题.
摘    要:讨论了液晶相位可变延迟器(liquid crystal variable retarder, LCVR)在自旋极化电子产生方面的应用.LCVR控制入射光子的偏振度,从而实现对自旋极化电子束极化方向的调制.采用LCVR代替1/4波片和Pockels盒的优点在于其对入射光方向不敏感,传输直径大,不需要机械转动即可大波长范围的延迟,且易于校准.另外,还研制了旋转检偏器,通过示波器读出,对光子偏振性进行检测并对LCVR进行校准. 关键词: 自旋极化电子源 液晶相位可变延迟器 极化方向

关 键 词:自旋极化电子源  液晶相位可变延迟器  极化方向
文章编号:1000-3290/2005/54(09)/4097-04
收稿时间:11 5 2004 12:00AM
修稿时间:2004-11-052004-12-02

Polarization direction modulation for spin-polarized electrons with liquid crystal variable retarder
Ding Hai-Bing,PANG Wen-Ning,Liu Yi-Bao,SHANG Ren-Cheng.Polarization direction modulation for spin-polarized electrons with liquid crystal variable retarder[J].Acta Physica Sinica,2005,54(9):4097-4100.
Authors:Ding Hai-Bing  PANG Wen-Ning  Liu Yi-Bao  SHANG Ren-Cheng
Abstract:The production of spin-polarized electrons and the modulation of polarization direction with liquid crystal variable retarder (LCVR) are discussed. The LCVR ca n play the roles of 1/4, 1/2, 3/4 and whole-wave plates with special voltages in the optical system. And the advantages of using LCVR instead of Pockels cell an d 1/4λ plate are the insensitivity to the incident photon direction, and the va riability of retardation over a large wavelength range without mechanical moveme nt. The polarization direction of spin-polarized electrons can be modulated easi ly by switching the helicity of the circularly polarized light. In order to dete rmine the photon polarization, the spinning polarimeter is developed. And the re sult is also described.
Keywords:spin-polarized electron source  liquid crystal variable retarder  polarization direction
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《物理学报》浏览原始摘要信息
点击此处可从《物理学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号