%0 Journal Article
%T Optical feedback characteristics in a helium neon laser with a birefringent internal cavity
%A Mao Wei
%A Zhang Shu-Lian
%A Xu Ting
%A Wan Xin-Jun
%A Liu Gang
%A <br>毛 威
%A 张书练
%A 徐 亭
%A 万新军
%A 刘 刚
%J 中国物理 B
%D 2007
%I 
%X The output characteristics of optical feedback in a helium neon laser with a birefringent internal cavity are studied systematically in five different regions of the gain curve for the two orthogonally polarized modes. When the laser operates in the two end regions of the laser gain curve, one of the two orthogonally polarized modes will be a leading one in optical feedback. Strong mode competition can be observed. However, when the laser operates in the middle region of the laser gain curve, the two modes can oscillate equally with optical feedback. Besides the intensity of the two polarized lights, the total light intensity is also studied at the same time. M-shaped optical feedback curves are found. Particularly, when the average intensities of the two lights are comparable, the intensity modulation curve of the total light is doubled, which can be used to improve the resolution of an optical feedback system.第一段]
%K optical feedback
%K birefringent internal cavity
%K self-mixing interference
%K mode competition<br>光学反馈
%K 内腔
%K 自混合干扰
%K 竞争模式
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=51EC29F0F1FE4796B6346AA81C294121&yid=A732AF04DDA03BB3&vid=7801E6FC5AE9020C&iid=708DD6B15D2464E8&sid=B17521FA9CC4751C&eid=F58D45ED9B0B4A58&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=0