Diode-pumped, passively Q-switched Nd:GdVO 4 green laser with periodically poled KTP and Cr 4+ :YAG saturable absorber
Diode-pumped, passively Q-switched Nd:GdVO 4 green laser with periodically poled KTP and Cr 4+ :YAG saturable absorber
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DOI：
10.1364/josab.23.000671
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发表时间：
2006-04
影响因子：
1.9
通讯作者：
Kejian Yang;Shengzhi Zhao;Gui-qiu Li;J. Zou
中科院分区：
文献类型：
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作者：
Kejian Yang;Shengzhi Zhao;Gui-qiu Li;J. Zou
以激光二极管为泵浦源，利用Cr4+:YAG可饱和吸收体实现了周期极化KTP腔内倍频Nd:GdVO4绿光激光器的无源调Q。测量了 Cr4+:YAG 不同小信号传输下的平均输出功率、脉冲宽度、脉冲重复率、脉冲能量和峰值功率对入射泵浦功率的依赖性。提出了考虑腔内光子密度高斯空间分布和放大自发发射(ASE)效应的速率方程来模拟该激光器的调Q过程，数值解与实验结果一致。我们进一步讨论了 ASE 参数 xi 对激光器性能的影响。
With a laser diode as the pump source, a passive Q switching of an intracavity frequency-doubling Nd:GdVO4 green laser with periodically poled KTP has been realized with a Cr4+:YAG saturable absorber. The dependences of the average output power, pulse width, pulse repetition rate, pulse energy, and peak power on incident pump power at different small-signal transmissions of Cr4+:YAG are measured. The rate equations considering the Gaussian spatial distribution of the intracavity photon density and the effects of the amplified spontaneous emission (ASE) are presented to simulate the Q-switching process of this laser, and the numerical solutions are in agreement with the experimental results. We have further discussed the influences of the ASE parameter ξ on the laser performance.