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研究了外腔钨酸铅(PbWO4)拉曼激光器的输出特性,介绍了由1064nm纳秒脉冲激发的PbWO4固态拉曼放大器。实验所用的抽运源是电光调Q的Nd…YAG纳秒激光器。对于外腔PbWO4拉曼激光器,当入射抽运脉冲能量为40mJ时,实验测得一阶斯托克斯脉冲的最大转换效率为13%,当入射抽运脉冲能量为48mJ时,实验得到包括一阶斯托克斯脉冲在内的总散射光的转换效率为34%,获得的二阶斯托克斯脉冲的转换效率为23%。PbWO4拉曼放大器是对外腔PbWO4拉曼激光器产生的一阶斯托克斯脉冲进行放大,实验获得的放大后一阶斯托克斯脉冲的最大输出能量为11mJ,放大倍数为3.3。
The output characteristics of Raman laser with lead tungstate (PbWO4) in external cavity were studied. The PbWO4 solid state Raman amplifier excited by 1064 nm nanosecond pulse was introduced. The pumping source used in the experiment is electro-optic Q-switched Nd ... YAG nanosecond laser. For the external cavity PbWO4 Raman laser, when the incident pump pulse energy is 40mJ, the maximum conversion efficiency of the first-order Stokes pulse is 13%. When the energy of the incident pump pulse is 48mJ, The conversion efficiency of the total scattered light including Stokes pulse is 34%, and the conversion efficiency of the obtained second-order Stokes pulse is 23%. The PbWO4 Raman amplifier amplifies the first-order Stokes pulse generated by the Raman laser in the external cavity PbWO4. The maximum output energy of the amplified first-order Stokes pulse is 11 mJ and the magnification is 3.3.