VCSEL直接倍频蓝光固态激光器的研究  

Blue light laser by direct frequency doubling of VCSEL

作　　者：马莹[1] 王成[2] 缪同群[3] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]上海交通大学激光与光子生物医学研究所,上海200030 [3]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《光学精密工程》2005年第3期253-259,共7页Optics and Precision Engineering

基　　金：国家"863"资助项目(No.2002AA311050)

摘　　要：980nm垂直腔面发射激光器(VCSEL)采用直接倍频和在复合腔中倍频两种方式实现了490nm蓝光输出。整形采用0.23p@980nm的自聚焦透镜(GRINlens),倍频晶体选择非线性系数相对较大、允许角相对较宽的LBO晶体。在VCSEL输出功率为530mW时,选取透过波长为980nm、长度为0.23pitch的自聚焦透镜整形,倍频晶体选择2mm×2mm×5mm的LBO晶体,输出了50μW的490nm蓝光,在增加了曲率半径R=50mm的外腔镜后得到了70μW的490nm蓝光。A 980 nm vertical cavity surface emitting (VCSEL) laser realizes frequency doubled by directly doubling and compound cavity doubling and obtains 490 nm blue laser. GRIN lens is used for shaping beam and LBO crystal is employed for secondary harmonic generation (SHG). In the experiment, the output power of the fundamental frequency laser is 530 mW, Gauss beam is adjusted by one GRIN lens with a length of 0.23p@980 nm and a LBO crystal with dimensions of 2 mm × 2 mm × 5 mm. And 490 nm blue beam of 50 μW is obtained. By adding an external cavity mirror with a radius curvature of 50 mm, the output power of 490 nm blue beam is increased to 70 μW.

关 键 词：垂直腔面发射激光器 直接倍频 复合腔 LBO晶体 自聚焦透镜 二次谐波振荡 

分 类 号：TN248.1[电子电信—物理电子学]