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Proceedings Paper

Laser absorption spectroscopy based on a broadband external cavity quantum cascade laser
Author(s): Juan Sun; Ningwu Liu; Hao Deng; Junya Ding; Jiancha Sun; Lei Zhang; Jingsong Li
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Paper Abstract

A tunable diode laser absorption spectroscopy (TDLAS) system based on a broad band external cavity quantum cascade laser (ECQCL) near 7.78 μm was used to study volatile organic compounds (VOCs) measurements. Instead of using a standard infrared mercury cadmium telluride (MCT) detector, a quartz crystal tuning fork (QCTF) as a light detector was successfully used for laser signal detection. Fast Fourier transform (FFT) was used to extract vibration intensity information of QCTF. Primary results indicate that the new developed system has a good reproducibility, and a good agreement was obtained by comparing with data taken from standard spectroscopic database.

Paper Details

Date Published: 10 February 2017
PDF: 5 pages
Proc. SPIE 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016), 102501X (10 February 2017); doi: 10.1117/12.2266830
Show Author Affiliations
Juan Sun, Anhui Univ. (China)
Ningwu Liu, Anhui Univ. (China)
Hao Deng, Anhui Univ. (China)
Junya Ding, Anhui Univ. (China)
Jiancha Sun, Anhui Univ. (China)
Lei Zhang, Anhui Univ. (China)
Jingsong Li, Anhui Univ. (China)

Published in SPIE Proceedings Vol. 10250:
International Conference on Optical and Photonics Engineering (icOPEN 2016)
Anand Krishna Asundi; Xiyan Huang; Yi Xie, Editor(s)

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