›› 2015, Vol. 24 ›› Issue (4): 44206-044206.doi: 10.1088/1674-1056/24/4/044206
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
周海亮a b c, 张清华d, 王波a b, 许心光a b, 王正平a b, 孙洵a b, 张芳a b, 张立松a b, 刘宝安a b, 柴向旭a b
Zhou Hai-Liang (周海亮)a b c, Zhang Qing-Hua (张清华)d, Wang Bo (王波)a b, Xu Xin-Guang (许心光)a b, Wang Zheng-Ping (王正平)a b, Sun Xun (孙洵)a b, Zhang Fang (张芳)a b, Zhang Li-Song (张立松)a b, Liu Bao-An (刘宝安)a b, Chai Xiang-Xu (柴向旭)a b
摘要: In this paper, the Raman gain coefficients of ammonium dihydrogen phosphate (ADP) and potassium dihydrogen phosphate (KDP) crystals are measured. By using a pump source of a 30-ps, 532-nm laser, the gain coefficients of ADP and KDP are 1.22 cm/GW, and 0.91 cm/GW, respectively. While for a 20-ps, 355-nm pump laser, the gain coefficients of these two crystals are similar, which are 1.95 cm/GW for ADP and 1.86 for KDP. The present results indicate that for ultra-violet frequency conversion, the problem of stimulated Raman scattering for ADP crystal will not be more serious than that for KDP crystal. Considering other advantages such the larger nonlinear optical coefficient, higher laser damage threshold, and lower noncritical phase-matching temperature, it can be anticipated that ADP will be a powerful competitor to KDP in large aperture, high energy third-harmonic generation or fourth-harmonic generation applications.
中图分类号: (Raman lasers)