摘要
报道了一种稳定的高功率双共振2μm光参量振荡器(OPO).该OPO使用调Q的线偏振全固态Nd∶YAG激光器作为抽运源,利用双棒串接补偿热致双折射和双Q开关正交放置技术提高了抽运源的输出功率和光束质量,通过腔内抽运单块KTP晶体实现了稳定的高功率2μm激光输出.在调Q频率为5kHz时,得到了29.5W的2μm激光输出.研究了OPO输出功率同KTP晶体温度和声光Q调制频率的关系,并测量了在29W时2μm激光的功率稳定性.在1h内该OPO的功率起伏小于1.4%.
A high power intracavity optical parametric oscillator (OPO) with a type Ⅱ KTiOPO4(KTP) is reported. The OPO is placed in a high power,linearly polarized diode-side-pumped Nd∶YAG laser cavity. By a suitable design of the OPO cavity,a maximum of 29.5 W at 2μm is reached with repetition rate of 5kHz. The output power characteristic of OPO is investigated. The fluctuation of OPO output power in less than 1.4%.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第3期1715-1718,共4页
Acta Physica Sinica