Chinese Optics Letters, 2004, 2 (11): 11677, Published Online: Jun. 6, 2006
Experimental study on terahertz radiation Download: 556次
320.5390 picosecond phenomena 190.7110 ultrafast nonlinear optics 190.4180 multiphoton processes 190.3270 Kerr effect 300.1030 absorption
Abstract
In this letter, we describe a coherent subpicosecond terahertz (THz) spectroscopy system based on non-resonant 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 THz with a high overall accuracy.
Liying Lang, Qirong Xing, Shuxin Li, Fanglin Mao, Lu Chai, Qingyue Wang. Experimental study on terahertz radiation[J]. Chinese Optics Letters, 2004, 2(11): 11677.