中国光学快报（英文版）
中國光學快報（英文版）
중국광학쾌보（영문판）
CHINES JOURNAL OF LASERS B
2004年
11期
677-679
,共3页
郎利影%邢岐荣%李术新%毛方林%柴路%王清月
郎利影%邢岐榮%李術新%毛方林%柴路%王清月
랑리영%형기영%리술신%모방림%시로%왕청월
In this letter, we describe a coherent subpicosecond terahertz (THz) spectroscopy system based on nonresonant optical rectification for the generation of THz radiation. We studied the two-photon absorption (TPA) of ZnTe induced by femtosecond laser pulses via THz generation, and its influence on the generation of THz radiation. Experimental results demonstrated that the intensity of pump beam against TPA must be traded off to get an optimum generation of THz radiation. As an example, we measured absorption spectrum of water vapor by time-domain spectroscopy (TDS) in the frequency range from 0.5 to 2.5 THzwith a high overall accuracy.
