中国激光, 2005, 32 (6): 729, 网络出版: 2006-06-06   

全固态593 nm复合腔连续波和频激光器

All-Solid-State CW Doubly Resonant All-Intracavity Sum-Frequency Mixing 593 nm Laser
作者单位
中国科学院长春光学精密机械与物理研究所,吉林 长春 130033
摘要
报道了一种新型复合腔结构和频(SFM)激光器,用两个激光二极管阵列(LDA)经过光纤耦合分别单独端面抽运Nd∶YVO4晶体,其中两激光晶体所选择的能级跃迁分别为4F3/2→4I11/2和4F3/2→4I13/2,其对应激光跃迁波长分别为1064 nm和1342 nm,两基频激光束分别在两个子谐振腔中振荡,在其交叠区利用KTP Ⅱ类临界相位匹配(CPM)进行腔内和频,获得了593 nm的和频激光。通过对激光晶体热效应的分析,设计了热不敏感腔,获得了520 mW连续波(CW)TEM00黄激光输出。光束质量因子M2<1.2,激光输出为低噪声输出,24 h功率不稳定度小于±2%。
Abstract
A new resonator which designed for doubly resonant continuous-wave intracavity sum-frequency mixing (SFM) laser is reported. Two Nd∶YVO4 were pumped by two laser diode array (LDA) which coupled by optical fiber respectively, 4F3/2→4I11/2 transition is chosen in one Nd∶YVO4 and 4F3/2→4I13/2 transition is chosen in another one, 1064 nm wavelength is gotten from 4F3/2→4I11/2 transition and 1342 nm wavelength is gotten from 4F3/2→4I13/2 transition,two laser beam oscillated in two sub-cavity. Considering thermal effect of laser crystal, a thermal insensitive cavity is designed, and type Ⅱ critical phase match (CPM) KTiOPO4 (KTP) is used to generate 593 nm SFM. 520 mW continuous-wave TEM00 yellow laser was obtained. The output beam is low noise, its M2 factor is less than 1.2, and the power instability is less than ±2% in 24 hours.
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吕彦飞, 檀慧明, 缪同群, 钱龙生. 全固态593 nm复合腔连续波和频激光器[J]. 中国激光, 2005, 32(6): 729. 吕彦飞, 檀慧明, 缪同群, 钱龙生. All-Solid-State CW Doubly Resonant All-Intracavity Sum-Frequency Mixing 593 nm Laser[J]. Chinese Journal of Lasers, 2005, 32(6): 729.

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