Highly Sensitive Tunable Diode Laser Absorption Spectroscopy of CO<suB>2</suB> Around 1.31μm

Chin. Phys. Lett.

2004, Vol. 21

Issue (10): 1908-1910 DOI:

Original Articles

Highly Sensitive Tunable Diode Laser Absorption Spectroscopy of CO₂ Around 1.31μm

SHAO Jie^1,2;GAO Xiao-Ming^1,2;DENG Lun-Hua^1,2;HUANG Wei²,YANG Yong²;PEI Shi-Xin²;YUAN Yi-Qian¹;ZHANG Wei-Jun²

¹Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Hefei 230031 ²Environmental Spectroscopy Laboratory, Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Hefei 230031

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SHAO Jie, GAO Xiao-Ming, DENG Lun-Hua et al 2004 Chin. Phys. Lett. 21 1908-1910

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Abstract Fifteen new absorption lines are observed when studying CO₂ absorption spectroscopy by wavelength modulation (WM) technique with a distributed feedback laser. The overtone spectra of CO₂ around 1.31μm and the corresponding spectral parameters (i.e. positions, intensities, self-broadening coefficients) are presented. The intensity of the weakest line detected is 2.25163×10^-27cm^-1/(molecule.cm^-2 at the pressure of 5Torr, with a corresponding absorption of 3.88×10^-8

Keywords: 25.20.Dc 42.68.Ca 78.20.Ci

Published: 01 October 2004

PACS:	25.20.Dc	(Photon absorption and scattering)
	42.68.Ca	(Spectral absorption by atmospheric gases)
	78.20.Ci	(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2004/V21/I10/01908

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	SHAO Jie
	GAO Xiao-Ming
	DENG Lun-Hua
	HUANG Wei
	YANG Yong
	PEI Shi-Xin
	YUAN Yi-Qian
	ZHANG Wei-Jun

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