[Highly sensitive tunable diode laser absorption spectroscopy of CO2 around 1.31 microm].
Fifteen new absorption lines were observed when studying CO2 absorption spectroscopy by wavelength modulation (WM) technique with a DFB laser. The line intensity we can detect is 2.251 63 x 10(-27) cm(-1) x (moleculecm(-2))(-1) at 6.67 x 10(2) Pa pressure, corresponding to an absorbance of 3. 88 x 10(-8). The overtone spectra of CO2 around 1.31 microm have been measured with a tunable diode laser and the corresponding spectral parameters (positions, intensities, and self-broadening coefficients) are presented.
Shao
Jie
J
Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China.
Gao
Xiao-Ming
XM
Yang
Yong
Y
Huang
Wei
W
Pei
Shi-Xin
SX
Yuan
Yi-Qian
YQ
Zhou
Shi-Kang
SK
Zhang
Wei-Jun
WJ