Laser & Optoelectronics Progress, Volume. 50, Issue 10, 103002(2013)
Experimental Study of Super-bBoadband Terahertz Coherent Detection with Air Plasma
Super-broadband spectrum detection technology has an important significance for high-resolution terahertz (THz) absorption spectrum measurements, as well as scientific research and application of terahertz development. We use air plasma as the detection medium and successfully detect super-broadband THz spectra. The detection mechanism is investigated by experiments. We use the system to measure two kinds of explosives′ super-broadband absorption spectra. The results indicate that THz spectra widths increase with pump power or bias, and super-broadband absorption spectra match well with Fourier transform infrared (FTIR) pectra in low frequency area.
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He Jun, Mu Kaijun, Yang Hua, Hou Deting, Ma Shengcan, Shi Xiaoyan. Experimental Study of Super-bBoadband Terahertz Coherent Detection with Air Plasma[J]. Laser & Optoelectronics Progress, 2013, 50(10): 103002
Category: Spectroscopy
Received: May. 17, 2013
Accepted: --
Published Online: Sep. 4, 2013
The Author Email: Jun He (hejun614@yahoo.com.cn)