scholarly journals Time-Resolved, NIR Two-Tone Frequency Modulation Spectroscopy for Quantitative Measurement of HO2 Radical in Fuel Oxidation Reactions.

2015 ◽  
Author(s):  
Haifeng Huang ◽  
Christopher Carlen ◽  
Brandon Rotavera ◽  
Craig Taatjes
Keyword(s):  
Frequency Modulation ◽  
Quantitative Measurement ◽  
Oxidation Reactions ◽  
Tone Frequency ◽  
Fuel Oxidation ◽  
Time Resolved ◽  
Modulation Spectroscopy ◽  
Ho2 Radical

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.

Time‐resolved frequency modulation spectroscopy of photochemical transients

1994 ◽  
Vol 101 (2) ◽  
pp. 1717-1720 ◽  
Author(s):  
Jonathan C. Bloch ◽  
Robert W. Field ◽  
Gregory E. Hall ◽  
Trevor J. Sears
Keyword(s):  
Frequency Modulation ◽  
Time Resolved ◽  
Modulation Spectroscopy

Measurement of high overtone intensities of HBr by two-tone frequency-modulation spectroscopy

1988 ◽  
Vol 130 (2) ◽  
pp. 395-406 ◽  
Author(s):  
C.B. Carlisle ◽  
H. Riris ◽  
L.G. Wang ◽  
G.R. Janik ◽  
T.F. Gallagher ◽  
...  
Keyword(s):  
Frequency Modulation ◽  
Tone Frequency ◽  
Modulation Spectroscopy ◽  
High Overtone
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