基于Littrow结构的可调谐半导体激光器  

Construction of the Tunable Diode Laser Based on Littrow Configuration

作　　者：管桦[1] 黄贵龙[1] 黄学人[1] 郭彬[1] 舒华林[1] 高克林[1] 

机构地区：[1]中国科学院武汉物理与数学研究所

出　　处：《中国激光》2007年第1期33-36,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金(60490280);973计划(2005CB724500)资助项目。

摘　　要：市售的商用半导体激光器由于其线宽宽、抖动和漂移大等缺点,不能满足离子阱中单个钙离子的激光冷却和精细测量实验的要求。因此,制作了一台可调谐的Littrow结构的半导体激光器（ECDL）.该激光器的自由光谱程为1.5GHz,通过精细调节光栅的角度,激光的波长可以覆盖775-785nm.该激光器的线宽约为2.5MHz,抖动为3-4MHz,30min内的漂移约为50MHz,这些指标优于商用的DL100半导体激光器,为下一步用于单个钙离子的激光冷却和精细测量所需要的397nm和866nm激光器的制作提供了条件。Because of the large linewidth, dither and drift , the commercial diode laser cannot meet the requirement of the experiments of laser cooling and elaborating measurement of a single calcium ion trapped in an ion trap. In this paper, a tunable Littrow-configuration external cavity diode laser （ECDL） is constructed. The free spectral range of the laser cavity is 1.5 GHz. By adjusting the angle of the grating, wavelength of the laser can be adjusted from 775 nm to 785 nm. Linewidth of the laser is less than 2.5 MHz, dithering of the laser is about 3-4 MHz, and drift of the laser is about 50 MHz within 30 minutes. These indexes are better than those commercial DL100 lasers. The laser is the base that will construct the next 397 nm and 866 nm lasers for laser cooling and elaborating measurement of a single calcium.

关 键 词：激光技术 半导体激光器 Littrow结构 可调谐 

分 类 号：TN248.4[电子电信—物理电子学]