Simulation and analysis of second-harmonic signal based on tunable diode laser absorption spectroscopy

Han Li; Jian Guo Liu; Ya Bai He; Jun Feng He; Lu Yao; Zhen Yu Xu; Jiu Ying Chen; Song Yuan; Rui Feng Kan

doi:10.3964/j.issn.1000-0593(2013)04-0881-05

Simulation and analysis of second-harmonic signal based on tunable diode laser absorption spectroscopy

Han Li, Jian Guo Liu, Ya Bai He, Jun Feng He, Lu Yao, Zhen Yu Xu, Jiu Ying Chen, Song Yuan, Rui Feng Kan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Tunable diode laser absorption spectroscopy (TDLAS) is a new gas detection technique developed recently with high spectral resolution, high sensitivity and fast time response. The second-harmonic signal of wavelength modulation spectroscopy (WMS) is often used as the detection signal for gas concentration inversion. Using Simulink, a visual modeling and simulation platform, the authors simulated the WMS signal based on TDLAS, and got the second-harmonic signal by using lock-in amplifier algorithm. Digital orthogonal algorithm was studied in this paper. The relationship between second-harmonic signals and the modulation indexes was analyzed by comparing changes of second-harmonic under different modulation indexes, in order to find out the optimized parameters for second-harmonic detection.

Original language	English
Pages (from-to)	881-885
Number of pages	5
Journal	Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis
Volume	33
Issue number	4
DOIs	https://doi.org/10.3964/j.issn.1000-0593(2013)04-0881-05
Publication status	Published - Apr 2013
Externally published	Yes

Keywords

Lock-in amplifier
Second-harmonic
Simulink
TDLAS

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10.3964/j.issn.1000-0593(2013)04-0881-05

Cite this

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title = "Simulation and analysis of second-harmonic signal based on tunable diode laser absorption spectroscopy",

abstract = "Tunable diode laser absorption spectroscopy (TDLAS) is a new gas detection technique developed recently with high spectral resolution, high sensitivity and fast time response. The second-harmonic signal of wavelength modulation spectroscopy (WMS) is often used as the detection signal for gas concentration inversion. Using Simulink, a visual modeling and simulation platform, the authors simulated the WMS signal based on TDLAS, and got the second-harmonic signal by using lock-in amplifier algorithm. Digital orthogonal algorithm was studied in this paper. The relationship between second-harmonic signals and the modulation indexes was analyzed by comparing changes of second-harmonic under different modulation indexes, in order to find out the optimized parameters for second-harmonic detection.",

keywords = "Lock-in amplifier, Second-harmonic, Simulink, TDLAS",

author = "Han Li and Liu, {Jian Guo} and He, {Ya Bai} and He, {Jun Feng} and Lu Yao and Xu, {Zhen Yu} and Chen, {Jiu Ying} and Song Yuan and Kan, {Rui Feng}",

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language = "English",

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T1 - Simulation and analysis of second-harmonic signal based on tunable diode laser absorption spectroscopy

AU - Li, Han

AU - Liu, Jian Guo

AU - He, Ya Bai

AU - He, Jun Feng

AU - Yao, Lu

AU - Xu, Zhen Yu

AU - Chen, Jiu Ying

AU - Yuan, Song

AU - Kan, Rui Feng

PY - 2013/4

Y1 - 2013/4

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AB - Tunable diode laser absorption spectroscopy (TDLAS) is a new gas detection technique developed recently with high spectral resolution, high sensitivity and fast time response. The second-harmonic signal of wavelength modulation spectroscopy (WMS) is often used as the detection signal for gas concentration inversion. Using Simulink, a visual modeling and simulation platform, the authors simulated the WMS signal based on TDLAS, and got the second-harmonic signal by using lock-in amplifier algorithm. Digital orthogonal algorithm was studied in this paper. The relationship between second-harmonic signals and the modulation indexes was analyzed by comparing changes of second-harmonic under different modulation indexes, in order to find out the optimized parameters for second-harmonic detection.

KW - Lock-in amplifier

KW - Second-harmonic

KW - Simulink

KW - TDLAS

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DO - 10.3964/j.issn.1000-0593(2013)04-0881-05

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JF - Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis

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Simulation and analysis of second-harmonic signal based on tunable diode laser absorption spectroscopy

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Keywords

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