期刊
OPTICS AND LASERS IN ENGINEERING
卷 37, 期 2-3, 页码 101-114出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0143-8166(01)00092-6
关键词
semiconductor lasers; diode laser spectroscopy; trace gas analysis; carbon dioxide; methane
类别
Semiconductor diode lasers were first developed in the mid-1960s and found immediate application as much needed tunable sources for high-resolution laser spectroscopy commonly referred to as tunable diode laser absorption spectroscopy (TDLAS). In this paper, currently available semiconductor lasers for spectroscopy in the near- and mid-infrared spectral region based upon gallium arsenide, indium phosphite, antimonides and lead-salt containing compounds will be reviewed together with the main features of TDLAS. Room-temperature measurements of atmospheric carbon dioxide near 2 mum will be discussed and recent results obtained with a fast chemical sensor for methane flux measurements based on lead-salt diode lasers operating near 7.8 mum will be presented. (C) 2002 Elsevier Science Ltd. All rights reserved.
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