外腔式KGd(WO4)2 Raman激光器的输出特性研究

研究了外腔式KGd（WO4）2 Raman激光器在红外纳秒脉冲抽运下的输出特性，通过改变KGd（WO4）2晶体的方位，实验得到了1159nm、1178nm、1272nm和1317nm 4个波长的红外Raman激光输出。波长为1159nm和1178nm的一阶Stokes脉冲的最大输出能量分别为23．9mJ和19．2mJ，相应的转换效率分别为34．8％和28％；波长为1272nm和1317nm的二阶Stokes脉冲的最大输出能量分别为17．6mJ和15．2mJ，相应的转换效率分别为28．1％和22．7％。

Output Properties of External Resonator KGd(WO4)2 Raman Laser

The output properties of an external resonator KGd(WO_4)_2 Raman laser pumped by nanosecond infrared pulses are studied.By changing the location of the KGd(WO_4)_2 crystal,Raman lasers with four wavelengths in the infrared region were generated including 1 159 nm,1 178 nm,1 272 nm and 1 317 nm.The obtained maximum output energies of the first Stokes pulses at 1 159 nm and 1 178 nm are 23.9 mJ and 19.2 mJ,respectively,and the corresponding conversion efficiencies are 34.8 % and 28 %,respectively.The obtained maximum output energies of the second Stokes pulses at 1 272 nm and 1 317 nm are 17.6 mJ and 15.2 mJ,respectively,and the corresponding conversion efficiencies are 28.1 % and 22.7 %,respectively.