摘要
A coherent mid-infrared laser source,which can be tuned from 7.2 μm to 12.2 μm based on the type-Ⅰ phase-matched difference frequency generation(DFG) in an uncoated ZnGeP2(ZGP) crystal,is reported.The two pump waves are from a type-Ⅱ phase-matched dual-wavelength KTP optical parametric oscillator(OPO) of which the signal and idler waves are tuned during 1.85-1.96 μm(extraordinary wave) and 2.5-2.33 μm(ordinary wave),respectively.The maximum energy of the generated mid-infrared laser is 10 μJ at 9.22 μm,corresponding to the peak power of 2.2 kW.
A coherent mid-infrared laser source,which can be tuned from 7.2 μm to 12.2 μm based on the type-Ⅰ phase-matched difference frequency generation（DFG） in an uncoated ZnGeP2（ZGP） crystal,is reported.The two pump waves are from a type-Ⅱ phase-matched dual-wavelength KTP optical parametric oscillator（OPO） of which the signal and idler waves are tuned during 1.85-1.96 μm（extraordinary wave） and 2.5-2.33 μm（ordinary wave）,respectively.The maximum energy of the generated mid-infrared laser is 10 μJ at 9.22 μm,corresponding to the peak power of 2.2 kW.
基金
supported by the Major State Basic Research Development Program of China (No. 2007CB310403)
the National Natural Science Foundation of China (No. 60801017)
Research Fund for the Doctoral Program of Higher Education (No. 20070420118)
