[A multiexponential model in cavity ring-down absorption spectroscopy].
A multiexponential model of cavity ring-down absorption spectroscopy is established for taking into account the laser linewidth effects. It is demonstrated that by fitting the logarithmic ring-down function to a truncated polynomial, absorption coefficent can be extracted from coefficients of the first as well as higher order terms of the fitted polynomial. The new fit model results in higher accuracy and broader dynamic range than the previous single exponential model.
Ma
H
H
Department of Modern Applied Physics, Center for Atomic and Molecular Science, Tsinghua University, Beijing.
Dong
G
G
He
Q
Q
Zhu
F
F
Jiang
K
K
Chen
D
D