LD端面抽运Nd:YVO_4/RTP 1.619μm腔外光参量振荡器  

LD-Pumped Nd:YVO_4/RTP 1.619μm Extracavity Optical Parametric Oscillator

作　　者：张凤娟[1] 王加贤[2] 

机构地区：[1]无锡科技职业学院电子工程学院,江苏无锡214028 [2]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《量子光学学报》2015年第3期279-284,共6页Journal of Quantum Optics

基　　金：福建省自然科学基金(2012J012777);无锡科技职业学院院级科技基金项目(RJ14002)

摘　　要：基于非临界相位匹配,尺寸4mm×4mm×25mm的磷酸钛氧铷(RTP)非线性光学晶体,在全固态1.62μm光参量振荡器(OPO)方面做了相关的实验研究,将808nm半导体激光端面抽运的Nd:YVO41.064μm激光模块应用于腔外RTP-OPO,获得了高效稳定的光参量输出。对比了不同OPO腔长、不同声光调Q频率对信号光平均输出功率和信号光脉宽的影响,在3.4 W抽运功率、23kHz的重复频率和4cm OPO腔长下获得最高平均功率为1.1 W的1.619μm信号光输出,抽运光-信号光转换效率高达32.3%,总光-光转换效率为8.5%。在最高输出功率1.1 W下得到单脉冲宽度4ns,比基频光脉冲宽度(30ns)小得多。The all solid state extracavity optical parametric oscillator at 1.6μm eye-safe wavelength band on a non-critical phase matching KTP crystals with 4 mm× 4 mm × 25 mm in size is demonstrated by using LD end-pumped Nd： YVO4 1. 064 μm laser as the KTP-EOPO pumping source. The signal average output power and pulse width with different pulse repetition frequencies of Q-switcher and different OPO cavity length was compared. With a pump power of 3.4 W and a pulse repetition frequency of 23 kHz and a OPO cavity length of 4 cm, a maximum output power of 1.1 W eye-safe laser at 1.619 μm was achieved with a pump-signal conversion efficiency to 32.3 % and a diode to signal conversion efficiency up to 8.5 %. Under the maximum output power of 1. 1W, the signal pulse width （4 ns） was narrower than the pulse width （30 ns）.

关 键 词：LD端面泵浦 光学参量振荡器 RTP晶体 声光调Q 非临界相位匹配 

分 类 号：O431[机械工程—光学工程]