High-resolution gas phase spectroscopy with a distributed feedback terahertz quantum cascade laser
High-resolution gas phase spectroscopy with a distributed feedback terahertz quantum cascade laser
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DOI：
10.1063/1.2335803
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发表时间：
2006-08-07
影响因子：
4
通讯作者：
Ritchie, D. A.
中科院分区：
文献类型：
--
作者：
Huebers, H.-W.;Pavlov, S. G.;Ritchie, D. A.
量子级联激光器是一种功率大、线宽窄、连续的太赫兹辐射源。作者在高分辨率气相光谱仪中实现了分布式反馈装置。已经实现了幅度和频率调制方案。通过将来自量子级联激光器的辐射与来自气体激光器的辐射混合来确定绝对频率。测量了甲醇在2.519 THz的转动跃迁的压力展宽和压力漂移，以证明光谱仪的性能。(c)2006年，美国物理学会。
The quantum cascade laser is a powerful, narrow linewidth, and continuous wave source of terahertz radiation. The authors have implemented a distributed feedback device in a spectrometer for high-resolution gas phase spectroscopy. Amplitude as well as frequency modulation schemes have been realized. The absolute frequency was determined by mixing the radiation from the quantum cascade laser with that from a gas laser. The pressure broadening and the pressure shift of a rotational transition of methanol at 2.519 THz were measured in order to demonstrate the performance of the spectrometer. (c) 2006 American Institute of Physics.