H. Iliev, D. Chuchumishev, I. Buchvarov, V. Petrov
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引用次数: 0
摘要
本文报道了在周期性极化KTP (PPKTP)晶体中利用腔内倍频技术实现Nd:YVO4激光器被动锁模的实验结果。利用负级联chi-2透镜和倍频非线性反射镜(FDNLM)实现激光锁模。基于激光腔内强度相关反射的FDNLM确保了自启动和自维持模式锁定，而级联chi-2透镜过程有助于大幅缩短脉冲。这种混合技术能够在高平均输出功率下产生稳定的脉冲序列，脉冲宽度为几皮秒。脉冲重复频率为117 MHz，平均输出功率为0.5 W ~ 3w，脉冲持续时间为2.9 ~ 5.2 ps。
Diode-pumped passively mode-locked laser using SHG in periodically poled crystals
Experimental results on passive mode-locking of Nd:YVO4 laser using intracavity frequency doubling in periodically poled KTP (PPKTP) crystal are reported. Both, negative cascaded chi-2 lensing and frequency doubling nonlinear mirror (FDNLM) are exploited for the laser mode-locking. The FDNLM based on intensity dependent reflection in the laser cavity ensures self-starting and self-sustaining mode-locking while the cascaded chi-2 lens process contributes to substantial pulse shortening. This hybrid technique enables generation of stable trains of pulses at high-average output power with several picoseconds pulse width. The pulse repetition rate of the laser is 117 MHz with average output power ranging from 0.5 W to 3 W and pulse duration from 2.9 to 5.2 ps.
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