论文部分内容阅读
报道了采用1064 nm激光抽运掺MgO周期极化LiNbO3(PPMgLN)晶体准相位匹配(QPM)技术实现高效率红外激光输出的实验结果,理论计算了PPMgLN晶体准相位匹配温度调谐曲线。抽运源为激光二极管连续(CW)抽运Nd∶YAG晶体声光调Q1μm激光器,PPMgLN晶体(MgO摩尔分数为5%)单谐振光参量振荡技术采用e→e+e相位匹配,消除了光束之间的走离效应和利用了PPMgLN晶体的最大非线性系数d33(27.4 pm/V)。在1064 nm激光抽运功率104 W,声光Q开关工作频率7 kHz和PPMgLN晶体工作温度110℃条件下,获得了平均功率62.7 W红外激光输出,斜率效率71.7%,其中中红外波长3.84μm激光输出功率16.7 W,近红外波长1.47μm激光输出功率46 W。
The experimental results of high-efficiency infrared laser output using 1064 nm laser pumping PMO phase-aligned (LiMbLN) crystal quasi-phase matching (QPM) technology are reported. The quasi-phase matching temperature tuning curve of PPMgLN crystal is theoretically calculated. Pumping source is laser diode CW pumping Nd: YAG crystal acousto-optic tuning Q1μm laser, PPMgLN crystal (MgO mole fraction is 5%) Single-resonance optical parametric oscillation technology uses e → e + e phase matching to eliminate the beam And the maximum nonlinear coefficient d33 (27.4 pm / V) of PPMgLN crystal is used. Under the conditions of 1064 nm laser pump power of 104 W, acousto-optic Q-switch operating frequency of 7 kHz and PPMgLN crystal operating temperature of 110 ℃, an average power of 62.7 W was obtained and the slope efficiency was 71.7%. The mid-infrared wavelength of 3.84 μm laser Output power 16.7 W, near-infrared wavelength 1.47 μm Laser output power 46 W