Simulation of Diode-Pumped Q-Switched Nd:YAG Laser Generating Eye-Safe Signal in IOPO Environment

Numerical simulation of diode-pumped Q-switched Nd:YAG laser leading to the generation of eye-safe signal in singly resonant Intracavity Optical Parametric Oscillator (IOPO) is presented. Starting from rate equations, the time dependent laser equations have been solved numerically, whereas the space-dependent OPO equations analytically. Our results show that 1.4 J diode laser (810 nm) pulse with 200 msec width, delivers 30 mJ Nd:YAG laser (1064 nm) pulse with 5 n-second width. This Nd:YAG laser further generates 9 mJ eye safe signal (1570 nm) pulse with 2.5 n-second width.

Effects of 946-nm thermal shift and broadening on Nd^(3+):YAG laser performance

Spectroscopic properties of flashlamp pumped Nd^3＋：YAG laser are studied as a function of temperature in a range from-30℃ to 60℃. The spectral width and shift of quasi three-level 946.0-nm inter-Stark emission within the respective intermanifold transitions of ^4F3/2→^4I9/2are investigated. The 946.0-nm line shifts toward the shorter wavelength and broadens. In addition, the threshold power and slope efficiency of the 946.0-nm laser line are quantified with temperature.The lower the temperature, the lower the threshold power is and the higher the slope efficiency of the 946.0-nm laser line is,thus the higher the laser output is. This phenomenon is attributed to the ion-phonon interaction and the thermal population in the ground state.

稳功率Nd：YAG连续激光器

选用高频开关电源作Ｋｒ灯电源，并使用热稳谐振腔、特殊聚光腔等，使Ｎｄ：ＹＡＧ连续激光器输出功率的稳定度达到±２％的水平。

倍频固体激光抽运双级染料激光放大系统的实验

报道了用倍频Nd∶YAG绿光激光器抽运双级染料激光放大系统的实验过程。实验应用两台高平均输出功率、高脉冲重复频率的倍频Nd∶YAG绿光激光器,通过精确的脉冲同步控制技术,实现了对双级染料激光放大系统的抽运,获得了放大级最高提取效率16.8%,总提取效率10.6%,最高输出功率9.2W的实验结果。得到了抽运激光提取效率随染料激光波长、染料溶液浓度和抽运激光峰值功率的变化关系。

高功率准连续激光二极管泵浦的Nd：YAG激光器

对高功率准连续激光二极管侧面泵浦Ｎｄ：ＹＡＧ固体激光器进行了理论和实验研究。当泵浦能量为１３５ｍＪ时，得到脉冲能量为１６ｍＪ和１０６４ｕｍ激光，重复频率可达４００Ｈｚ。