用于抽运铯蒸气激光器的半导体激光器波长稳定与线宽窄化研究  

Wavelength Stabilization and Linewidth Narrowing of Laser Diode for Pumping Cs Vapor Laser

作　　者：封建胜[1] 袁孝(指导)[1] 熊宝星[1] 高帆[1] 张翔[1] 

机构地区：[1]苏州大学现代光学技术研究所江苏省先进光学制造技术重点实验室,教育部/江苏省现代光学技术重点实验室,江苏苏州215006

出　　处：《光学学报》2014年第5期150-156,共7页Acta Optica Sinica

基　　金：国家自然科学基金(91023009;61275140);江苏省普通高校研究生科研创新计划(CXZZ13_0808;CXZZ12_0813)

摘　　要：针对铯蒸气激光器对窄线宽与高稳定852nm半导体激光抽运源的要求,采用体布拉格(Bragg)光栅作为外腔输出镜,研究了体Bragg光栅衍射效率对外腔半导体激光器输出光谱特性的影响。研究结果表明,衍射效率为24%、32%与37%的体布拉格光栅均能够改善半导体激光器输出光谱特性;输出光束中心波长锁定在852nm附近、输出线宽约为0.26nm;外腔半导体激光器输出波长随抽运电流、温度的变化速率分别小于10.4pm/A、7.2pm/℃,优于自由运行半导体激光器;随着光栅衍射效率增加,全系统外腔效率从91%降低至86%。As referred to the laser diode with wavelength stabilization and linewidth narrowing required in pumping Cesium vapor lasers, volume Bragg gratings are employed as the external cavity output mirror and the effect of volume Bragg gratings with different diffraction efficiencies on output spectrum of external cavity laser diode is studied. It is demonstrated that the volume Bragg gratings with diffraction efficiencies of 24 %, 32 % and 37 % can improve the laser＇s output spectrum apparently. The lasing central wavelength is locked at 852 nm, and the linewidth is narrowed to 0.26 nm. The output wavelength rates of pumping current and operating temperature are less than 10.4 pm/A and 7.2 pm/℃ , respectively. With the increase of diffraction efficiency, the external cavity ratio of this system is reduced from 91% to 86%.

关 键 词：激光器 波长稳定 线宽窄化 体布拉格光栅 铯蒸气激光器 

分 类 号：O436[机械工程—光学工程]