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中国物理学会期刊

高功率腔内双共振2μm光参量振荡器特性研究

CSTR: 32037.14.aps.58.1715

High power 2μm intracavity doubly resonant optical parametric oscillator

CSTR: 32037.14.aps.58.1715
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  • 报道了一种稳定的高功率双共振2?μm 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2?μm 激光输出. 在调Q频率为5?kHz时,得到了295 W的2?μm 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2?μm激光的功率稳定性. 在1 h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 2?μm is reached with repetition rate of 5?kHz. The output power characteristic of OPO is investigated. The fluctuation of OPO output power in less than 1.4%.

     

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