中国物理B ›› 2008, Vol. 17 ›› Issue (4): 1286-1290.doi: 10.1088/1674-1056/17/4/023
张铁犁1, 徐德刚1, 王鹏1, 纪峰2, 姚建铨2, 张百钢2
Ji Feng(纪峰)a) b)†, Yao Jian-Quan(姚建铨)a) b), Zhang Bai-Gang(张百钢)a) b), Zhang Tie-Li(张铁犁)a) , Xu De-Gang(徐德刚)a) , and Wang Peng(王鹏)a)
摘要: This paper demonstrates a compact efficient optical parametric generator internal to a Q-switched diode-end-pumped Nd:YVO$_{4}$ laser with periodically poled MgO:LiNbO3(PPMgLN). With the Q-switch set at a repetition rate of 25kHz and the PPMgLN crystal operated at room temperature (25\du\,), the intracavity optical parametric generator threshold was reached as a diode pump power of 0.9\,W. A maximum signal output power of 0.34W with a pulse width of 25\,ns and a beam quality factor of 1.4 was obtained at an incident diode power of 3.4\,W, leading to a conversion efficiency of 10{\%} with a slope efficiency of 14.4{\%}. By varying the crystal temperature from 25 to 200\du, the output signal wavelengths were tuned in range of 1506--1565\,nm. Over a 30-minutes interval, the instability of the signal power was measured to be less than 1{\%}. In addition, the threshold pump intensity for the intracavity optical parametric generator is theoretically investigated, and the obtained result is in good agreement with the experimental results.
中图分类号: (Semiconductor lasers; laser diodes)