时变电流注入下光电负反馈垂直腔表面发射激光器的偏振双稳特性  

Polarization bistability characteristics of vertical-cavity surface-emiffing lasers with negative optoelectronic feedback subject to time-varying current

作　　者：黄雪兵[1] 夏光琼[1] 吴正茂[1] 

机构地区：[1]西南大学物理科学与技术学院,重庆400715

出　　处：《物理学报》2010年第5期3066-3069,共4页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60978003)资助的课题~~

摘　　要：基于光电负反馈垂直腔表面发射激光器(VCSELs)的理论模型,数值研究了时变电流注入下反馈率大小和注入电流扫描周期对VCSELs偏振双稳特性的影响.研究结果表明:增大反馈率将使双稳区域向更大电流方向移动,同时双稳区宽度增加;增大注入电流扫描周期将使双稳区宽度减小.因此,通过调整光电负反馈的大小以及注入电流的扫描周期,可实现对VCSELs偏振双稳特性的控制.Based on the theoretical model of vertical-cavity surface emitting lasers （ VCSELs） with negative optoelectronic feedback,the influences of the feedback strength and the scan period of injection time-varying current on the polarization bistability characteristics of VCSELs have been investigated numerically. The results show that,with the increase of the feedback index,the bistability region moves towards bigger current side and the width of bistability region increases; while with the increase of the scan period of injection time-varying current,the width of bistability region decreases. As a result,the polarization bistability characteristics can be controlled through adjusting the strength of optoelectronic feedback and the scan period of time-varying injection current.

关 键 词：垂直腔表面发射激光器(VCSELs) 偏振双稳 光电负反馈 时变电流 

分 类 号：TN248[电子电信—物理电子学]