摘要
Both the signal(1.53µm)and idler(3.47µm)performances of a KTA−based optical parametric oscillator(OPO)are presented.The KTA-OPO is intracavity driven by a diode-pumped Nd:YVO_(4)/Cr:YAG passively Q−switched laser with a quite compact configuration.The signal and idler average output powers up to 941 and 583 mW,respectively,have been achieved,corresponding to an improved diode-to-idler conversion efficiency of 6.5%and a diode-to-OPO(signal+idler)conversion efficiency of 16.9%.At different pump levels,the signal pulse duration and repetition rate are detected to be in the range of 1.8–3.2 ns and 13–112 kHz,respectively.Moreover,near diffraction limited and Gaussian type beam profiles at 1.53 and 3.47µm are also observed.
基金
Supported by the Natural Science Foundation of Shandong Province under Grant No ZR2010FQ022
the Natural Scientific Research Innovation Foundation in Harbin Institute of Technology under Grant No HIT-NSRIF-201007
the Development Program for Outstanding Young Teachers in Harbin Institute of Technology under Grant No HITQNJS-2009-074.
