外腔谐振倍频是获得397.5 nm紫外激光的重要方法。搭建了基于周期极化的磷酸氧钛钾(PPKTP)晶体的半整体谐振腔,对经半导体锥型放大器放大的795 nm单频连续激光进行谐振倍频。在203 m W的795 nm基频光输入条件下,实现了60.4 m W的397.5 n...外腔谐振倍频是获得397.5 nm紫外激光的重要方法。搭建了基于周期极化的磷酸氧钛钾(PPKTP)晶体的半整体谐振腔,对经半导体锥型放大器放大的795 nm单频连续激光进行谐振倍频。在203 m W的795 nm基频光输入条件下,实现了60.4 m W的397.5 nm连续单频紫外激光输出,倍频转化效率为30%;在基频光功率约87.5 m W时,得到最大的倍频效率约为34.6%。倍频紫外光光束质量因子M2优于1.21,光束质量良好,30 min内典型的倍频光功率均方根起伏小于1.9%。该倍频器结构紧凑,具有很好的机械稳定性,可实现紫外激光的稳定输出,可用于产生对应铷原子跃迁线的压缩、纠缠态光场,在量子光学和精密测量等领域发挥重要作用。展开更多
We report a compact,efficient optical parametric oscillator(OPO)based on a periodically poled potassium titanyl phosphate(PPKTP)crystal pumped by a 532 nm laser,which generated 1.51 W of average power at the signal wa...We report a compact,efficient optical parametric oscillator(OPO)based on a periodically poled potassium titanyl phosphate(PPKTP)crystal pumped by a 532 nm laser,which generated 1.51 W of average power at the signal wavelength of 709 nm with the pulse duration of~1.0 ns.The extraction efficiency was up to 59%.To the best of our knowledge,this is the first report on Watt-level green-pumped PPKTP-based singly resonant oscillator OPO(SRO-OPO).The precise build-up time of OPO was determined to be 1.6 ns benefitting from the characteristic of twin-peak pulse profile of pump beam.The spectrum width of the idler was also measured to be 4.2 nm with the central wavelength of 2134 nm at 0.2 nm spectral resolution of optical spectrum analyzer.In addition,the beam quality of M^(2)<1.9 of generated signal exhibits a good consistency with M^(2)<1.5 for the pump source.展开更多
基金Supported by National Natural Foundation of Science(10674126,10874171)National Fundamental Research Program(2006CB921900)+1 种基金the Innovation Fund from CASProgram for NCET
文摘外腔谐振倍频是获得397.5 nm紫外激光的重要方法。搭建了基于周期极化的磷酸氧钛钾(PPKTP)晶体的半整体谐振腔,对经半导体锥型放大器放大的795 nm单频连续激光进行谐振倍频。在203 m W的795 nm基频光输入条件下,实现了60.4 m W的397.5 nm连续单频紫外激光输出,倍频转化效率为30%;在基频光功率约87.5 m W时,得到最大的倍频效率约为34.6%。倍频紫外光光束质量因子M2优于1.21,光束质量良好,30 min内典型的倍频光功率均方根起伏小于1.9%。该倍频器结构紧凑,具有很好的机械稳定性,可实现紫外激光的稳定输出,可用于产生对应铷原子跃迁线的压缩、纠缠态光场,在量子光学和精密测量等领域发挥重要作用。
基金supported by the Chinese Academy of Sciences Pioneer Hundred Talents Program(Grant No.E1Z1D101)the Research Project of Aerospace Information Research Institute,Chinese Academy of Sciences(Grant No.E2Z2D101)
文摘We report a compact,efficient optical parametric oscillator(OPO)based on a periodically poled potassium titanyl phosphate(PPKTP)crystal pumped by a 532 nm laser,which generated 1.51 W of average power at the signal wavelength of 709 nm with the pulse duration of~1.0 ns.The extraction efficiency was up to 59%.To the best of our knowledge,this is the first report on Watt-level green-pumped PPKTP-based singly resonant oscillator OPO(SRO-OPO).The precise build-up time of OPO was determined to be 1.6 ns benefitting from the characteristic of twin-peak pulse profile of pump beam.The spectrum width of the idler was also measured to be 4.2 nm with the central wavelength of 2134 nm at 0.2 nm spectral resolution of optical spectrum analyzer.In addition,the beam quality of M^(2)<1.9 of generated signal exhibits a good consistency with M^(2)<1.5 for the pump source.
