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Proceedings Paper

Influence of laser linewidth on spectral ripple in fold-type cavity ring-down measurement
Author(s): Zhongqi Tan; Suyong Wu; Xingwu Long; Wenjian Wei
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Paper Abstract

So-called spectral ripple a special phenomenon only existing in fold-type cavity ring-down spectrometer, and it is believed as deriving from the interference effect of different lights on the folded mirror. To investigate the influence of this phenomenon, on fold-type cavity ring-down measurement, some representative instances of laser linewidth are simulated and analyzed, and some experiments are carried on. It is found that the increasing of laser linewidth can make the amplitude of the spectral ripple decrease, more importantly, which can make the ring-down signal no longer decay as a single exponential but as the double exponential function.

Paper Details

Date Published: 19 November 2014
PDF: 9 pages
Proc. SPIE 9274, Advanced Sensor Systems and Applications VI, 92741X (19 November 2014); doi: 10.1117/12.2073362
Show Author Affiliations
Zhongqi Tan, National Univ. of Defense Technology (China)
Suyong Wu, National Univ. of Defense Technology (China)
Xingwu Long, National Univ. of Defense Technology (China)
Wenjian Wei, National Univ. of Defense Technology (China)

Published in SPIE Proceedings Vol. 9274:
Advanced Sensor Systems and Applications VI
Tiegen Liu; Shibin Jiang; Niels Neumann, Editor(s)

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