高效新型自倍频Yb：GdYAB激光器的理论和实验研究  

Theoretic Analyses and Experimental Studies on a Novel Compact and High Efficient Self-Frequency-Doubled Yb∶GdYAB Laser

作　　者：刘庆文[1] 王清月[1] 薛迎红[1] 柴路[1] 李静[2] 王继扬[2] 

机构地区：[1]天津大学精密仪器与光电子工程学院光电信息技术科学教育部重点实验室,天津300072 [2]山东大学晶体材料国家重点实验室,济南250100

出　　处：《光子学报》2008年第9期1713-1716,共4页Acta Photonica Sinica

基　　金：国家973重点基础研究发展计划(2006CB806002);国家自然科学基金(60678012)资助

摘　　要：通过研究自倍频现象的物理过程,理论推导了自倍频激光器输出功率的表达式,分析了影响自倍频激光器高效运转的具体参量.研究发现,除了晶体自身的性质外,在具体实验中晶体放置的位置、角度以及晶体的温度等,都不同程度地影响着自倍频激光器的输出功率.在此基础上,实现了LD端面泵浦的新型Yb∶GdYAB自倍频激光器运转,当晶体吸收功率为2.56W时,获得了总功率为441mW的自倍频绿光输出,从二极管到绿光的光-光转换效率达到了17.2%,并具有较好的功率稳定性和模式.A resulting expression for the output power of a self-frequency-doubled （SFD） laser was derived from the investigation of the SFD process. The parameters of influence on the efficiency of SFD were analyzed. The output power of a SFD laser can be imposed in a experiment by the position, angle and temperature of the crystal besides its inherent properties. According to the theory,a laser diode （LD） end- pumped highly efficiency SFD Yb ： GdYAB laser has been achivered. A maximum output power of green laser of 441 mW was obtained while the pump power was 2.56 W,corresponding to a conversion efficiency of 17.2% from LD to green laser. The SFD green laser had a good operative stability and a TM00 mode.

关 键 词：自倍频 LD泵浦 转换效率 Yb:GdYAB晶体 

分 类 号：TN248.1[电子电信—物理电子学]