半导体激光器的线宽压窄及频率连续调谐  

Narrowing Linewidth and Continuously Frequency-Tuning of a Semiconductor Laser

作　　者：王波[1] 姚景芹[1] 武海斌[1] 沈云[1] 谢常德[1] 王海[1] 

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

出　　处：《量子光学学报》2004年第2期82-86,共5页Journal of Quantum Optics

基　　金：国家自然科学基金(No.60325414和No.60238010);山西省自然科学基金(No.20011030和No.20031007);山西省归国留学人员基金

摘　　要：我们利用共焦F-P腔光学弱反馈技术,实现了单模GaAlAs半导体激光器线宽压窄、频率锁定及连续调谐。其线宽从自由运转时的10MHz被压窄到45kHz,并可将频率锁定于共焦F-P腔。实验证明,在弱反馈情况下,激光器的频率连续调谐范围与共焦F-P腔的光强反馈量近似成正比,实现了在铷原子D2线附近1.2GHz的频率连续调谐。Using the technology of the weak optical feedback from a confocal F-P cavity, we demonstrated the narrowing linewidth, frequency locking and continuously frequency-tuning of a single-mode semiconductor laser. The linewidth is reduced from 10 MHz at free runing to 45 kHz with the optical feedback while the frequency is locked to the confocal F-P cavity. The continuously frequency-tuning range is linearly proportional to the feedback power ratios under the condition of the weak optical feedback, approximately. The continuously frequency-tuning range of 1.2 GHz around D_2 line of Rubidium is experimentally realized.

关 键 词：窄线宽半导体激光器 共焦F-P腔 反馈量 频率调谐范围 

分 类 号：O431[机械工程—光学工程]