通过受激拉曼效应获得紫外光,建立了氙灯抽运的电光调Q固体拉曼激光器实验系统,研究了硝酸钡晶体在紫外波段的受激拉曼效应。采用单脉冲能量1 J,脉宽9 ns的1064 nm的基频光通过KTP晶体倍频,再经过BBO晶体混频产生单脉冲能量140.76 mJ,脉宽8 ns的355 nm紫光,用其做抽运源激发硝酸钡晶体产生受激拉曼效应,有效地实现了纳秒级的紫外波段拉曼光输出,经光谱仪测试波长为368.15 nm的正一阶斯托克斯光,脉宽7.1 ns,极间频移为1006 cm-1,增益系数为78.51 cm/GW。

Stimulated Raman scattering in Ba(NO3)2 crystal at ultraviolet band was studied by building the flashlamp-pumped E-O Q-switched all-solid-state Raman laser experiment system,and the fundamental wave is 1064 nm with the single pulse energy of 1 J and the pulse width of 9 ns,then the single pulse energy of 140.76 mJ at 355 nm with the pulse width of 8 ns was obtained through second harmonic generation of KTP crystal and third harmonic generation in BBO crystal. And 355 nm is used to be the pumping source to cause stimulated Raman scattering in Ba(NO3)2 crysal to acquire the Raman scattering light. It′s proved to be 368.15 nm by a spectrometer,with the pulse width of 7.1 ns,frequency shift of 1006 cm-1 and the gain coefficient of 78.51 cm/GW.