MHz-rate scanned-wavelength direct absorption spectroscopy using a distributed feedback diode laser at 2.3 mu m

doi:10.1016/j.optlastec.2020.106344

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	MHz-rate scanned-wavelength direct absorption spectroscopy using a distributed feedback diode laser at 2.3 mu m
	M. Raza,L. H. Ma,C. Y. Yao,M. Yang,Z. Wang,Q. Wang,R. F. Kan and W. Ren
刊名	Optics and Laser Technology
	2020
卷号	130 页码:6
ISSN号	0030-3992
DOI	10.1016/j.optlastec.2020.106344
英文摘要	This paper demonstrates scanned-wavelength tunable diode laser absorption spectroscopy (TDLAS) with a scan rate up to 2 MHz using a distributed feedback (DFB) diode laser. The 2.3-mu m DFB laser was used to probe the R (11) line present in the first overtone band of carbon monoxide (CO). Detailed tuning characteristics of the DFB laser were investigated over a wide range of scan rates from 20 kHz to 2 MHz. The tuning range was found to decrease exponentially with the scan rate below 1 MHz, and then slightly decrease up to 2 MHz. By applying a sinusoidal waveform to the injection current, the phase shift (phi) between intensity and frequency modulations was measured to be 1.117c at the scan rate of 20 kHz, which increases to 1.617c at 2 MHz. Due to the significant variation of with the scan rate, the position of the target absorption profile on the transmitted laser intensity curve must be adjusted accordingly based on the simultaneously recorded etalon signal. All the measurements obtained at different scan rates show excellent consistency in the CO spectrum. This study reveals that MHz-rate scanned-wavelength direct absorption spectroscopy can be developed for ultrafast gas sensing that may find promising applications in many fields.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64680]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	M. Raza,L. H. Ma,C. Y. Yao,M. Yang,Z. Wang,Q. Wang,R. F. Kan and W. Ren. MHz-rate scanned-wavelength direct absorption spectroscopy using a distributed feedback diode laser at 2.3 mu m[J]. Optics and Laser Technology,2020,130:6.
APA	M. Raza,L. H. Ma,C. Y. Yao,M. Yang,Z. Wang,Q. Wang,R. F. Kan and W. Ren.(2020).MHz-rate scanned-wavelength direct absorption spectroscopy using a distributed feedback diode laser at 2.3 mu m.Optics and Laser Technology,130,6.
MLA	M. Raza,L. H. Ma,C. Y. Yao,M. Yang,Z. Wang,Q. Wang,R. F. Kan and W. Ren."MHz-rate scanned-wavelength direct absorption spectroscopy using a distributed feedback diode laser at 2.3 mu m".Optics and Laser Technology 130(2020):6.