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1064nm和1342nm,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KTPⅡ类临界相位匹配(CPM)进行腔内和频,获得了593nm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520mW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,24h功率不稳定度小于±2%。
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, 4F3-24I11-2 transition is chosen in one Nd:YVO4 and 4F3-24I13-2 transition is chosen in another one, 1064 nm wavelength is gotten from 4F3-24I11-2 transition and 1342 nm wavelength is gotten from 4F3-24I13-2 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.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2005年第6期729-733,共5页
Chinese Journal of Lasers
基金
国家863计划(2002AA311140)资助项目。
