Huang Y J, Chen Y F, Chen W D, Zhang G
Opt Express. 2015 Apr 20;23(8):10435-43. doi: 10.1364/OE.23.010435.
Extending the spectral wavelengths of the diode-pumped Nd-doped lasers at 1.3 μm with the KTP crystal in the intracavity Raman configuration is reported for the first time to the best of our knowledge. A systematic comparison is performed to show that a better optical conversion efficiency for the Nd:YAP/KTP Raman laser could be achieved thanks to the higher peak power and linearly polarized radiation at 1341 nm, whereas up to four Stokes emission lines are generated from the Nd:YAG/KTP Raman laser as a result of the fundamental dual-color operation at 1319 and 1338 nm. The maximum Stokes output power of the developed Nd:YAP/KTP Raman laser reaches 1.04 W under an incident pump power of 16 W and a pulse repetition rate of 10 kHz, corresponding to the diode-to-Stokes conversion efficiency as high as 6.5%. The largest pulse energy and highest peak power are evaluated to be up to 104 μJ and 34.7 kW, respectively.
据我们所知，首次报道了在内腔拉曼配置中使用KTP晶体扩展二极管泵浦掺钕激光器在1.3μm处的光谱波长。进行了系统比较，结果表明，由于Nd:YAP/KTP拉曼激光器在1341nm处具有更高的峰值功率和线偏振辐射，因此可以实现更好的光学转换效率，而Nd:YAG/KTP拉曼激光器由于在1319nm和1338nm处的基波双色操作，会产生多达四条斯托克斯发射线。在16W的入射泵浦功率和10kHz的脉冲重复频率下，所研制的Nd:YAP/KTP拉曼激光器的最大斯托克斯输出功率达到1.04W，对应的二极管到斯托克斯转换效率高达6.5%。评估得到的最大脉冲能量和最高峰值功率分别高达104μJ和34.7kW。
