Atmospheric trace gas monitoring using high-frequency modulation spectroscopy with semiconductor lasers

1994 ◽  
Author(s):  
Peter W. Werle
Keyword(s):  
Semiconductor Lasers ◽  
Frequency Modulation ◽  
High Frequency ◽  
Trace Gas ◽  
Gas Monitoring ◽  
Modulation Spectroscopy ◽  
Atmospheric Trace Gas

High-frequency modulation of twin-stripe semiconductor lasers

2003 ◽  
Author(s):  
Edeltraud Gehrig ◽  
Nicoletta Gaciu ◽  
Markus Pessa ◽  
Ortwin G. Hess
Keyword(s):  
Semiconductor Lasers ◽  
Frequency Modulation ◽  
High Frequency

Shot-noise-limited dual-beam detector for atmospheric trace-gas monitoring with near-infrared diode lasers

2000 ◽  
Vol 39 (30) ◽  
pp. 5609 ◽  
Author(s):  
Georges Durry ◽  
Ivan Pouchet ◽  
Nadir Amarouche ◽  
Théodore Danguy ◽  
Gerard Megie
Keyword(s):  
Shot Noise ◽  
Near Infrared ◽  
Diode Lasers ◽  
Trace Gas ◽  
Gas Monitoring ◽  
Dual Beam ◽  
Atmospheric Trace Gas

Precision Atmospheric Trace Gas Monitoring with Frequency Comb Lasers

2015 ◽  
Author(s):  
G. B. Rieker ◽  
F. R. Giorgetta ◽  
W. C. Swann ◽  
L. C. Sinclair ◽  
C. L. Cromer ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Trace Gas ◽  
Gas Monitoring ◽  
Atmospheric Trace Gas

scholarly journals Recent Developments in Modulation Spectroscopy for Methane Detection Based on Tunable Diode Laser

2019 ◽  
Vol 9 (14) ◽  
pp. 2816 ◽  
Author(s):  
Fei Wang ◽  
Shuhai Jia ◽  
Yonglin Wang ◽  
Zhenhua Tang
Keyword(s):  
Semiconductor Lasers ◽  
Frequency Modulation ◽  
Near Infrared ◽  
Infrared Region ◽  
Tunable Diode Laser ◽  
Tone Frequency ◽  
Modulation Spectroscopy ◽  
Methane Absorption ◽  
Recent Developments ◽  
Methane Detection

In this review, methane absorption characteristics mainly in the near-infrared region and typical types of currently available semiconductor lasers are described. Wavelength modulation spectroscopy (WMS), frequency modulation spectroscopy (FMS), and two-tone frequency modulation spectroscopy (TTFMS), as major techniques in modulation spectroscopy, are presented in combination with the application of methane detection.

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