| A periodically poled LiNbO_3 optical parametric generator in wavelength conversion from 2 to 3.88——4.34 μm |
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| 作者单位： | Institute of Opto-Electronies Harbin Institute of Technology Harbin 150001 Microeleetronic Center，Harbin Institute of Technology at Weihai，WeiHai 264209，Institute of Opto-Electronics Harbin Institute of Technology，Harbin 150001，Institute of Opto-Electronics Harbin Institute of Technology，Harbin 150001，Institute of Opto-Electronics Harbin Institute of Technology，Harbin 150001，Institute of Opto-Electronics Harbin Institute of Technology，Harbin 150001 |
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| 摘 要： | A periodically poled lithium niobate(PPLN)optical parametric generator(OPG)pumped by a laser diode(LD)-pumped Q-switched Tm,Ho:GdVO_4 laser operated at 2.048μm with pump pulse of 25 ns and repetition rate of 10 kHz is reported.A continuous tunable middle-infrared(mid-IR)spectrum of 3.88-4.34μm is obtained by changing the crystal temperature from 50 to 124°C.When the incident pump power is 3 W,the total OPG output power is 95 mW,corresponding to optical conversion efficiency of 3.2%.
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