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Proceedings Paper

N2-cooled THz quartz-enhanced photoacoustic sensor operating in pulsed mode for hydrogen sulfide detection in the part-per-billion concentration range
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Paper Abstract

Many applications such as toxic gas detection or H2S monitoring in natural gas require operation in the THz spectral region, where gas species show distinct spectral “fingerprints” that can be easily discriminated by the gas matrix background absorption features.
So far, continuous-wave THz quantum cascade lasers employed in quartz-enhanced photoacoustic (QEPAS) sensors required liquid helium-cooling systems. In this work, we demonstrated the first liquid nitrogen-cooled THz QEPAS sensor for H2S detection operated in pulsed mode and mounting a spectrophone based on a quartz tuning fork with 1.5 mm prong spacing. A sensitivity level in the part-per-billion concentration range was achieved.

Paper Details

Date Published: 31 January 2020
PDF: 8 pages
Proc. SPIE 11288, Quantum Sensing and Nano Electronics and Photonics XVII, 112881W (31 January 2020); doi: 10.1117/12.2545707
Show Author Affiliations
Andrea Zifarelli, Univ. degli Studi di Bari Aldo Moro (Italy)
Shanxi Univ. (China)
Angelo Sampaolo, Univ. and Politecnico of Bari (Italy)
Shanxi Univ. (China)
Pietro Patimisco, Univ. and Politecnico of Bari (Italy)
Shanxi Univ. (China)
Marilena Giglio, Univ. and Politecnico of Bari (Italy)
Shanxi Univ. (China)
Chenren Yu, Shanghai Institute of Technical Physics (China)
Huan Zhu, Shanghai Institute of Technical Physics (China)
Haiqing Zhu, Shanghai Institute of Technical Physics (China)
Gaolei Chang, Shanghai Institute of Technical Physics (China)
Fangfang Wang, Shanghai Institute of Technical Physics (China)
Jianxin Chen, Shanghai Institute of Technical Physics (China)
Lianhe Li, Univ. of Leeds (United Kingdom)
A. Giles Davies, Univ. of Leeds (United Kingdom)
Edmund H. Linfield, Univ. of Leeds (United Kingdom)
Li He, Shanghai Institute of Technical Physics (China)
Tingting Wei, Shanxi Univ. (China)
Hongpeng Wu, Shanxi Univ. (China)
Lei Dong, Shanxi Univ. (China)
Gangyi Xu, Shanghai Institute of Technical Physics (China)
Frank K. Tittel, Rice Univ. (United States)
Vincenzo Spagnolo, Univ. and Politecnico of Bari (Italy)
Shanxi Univ. (China)


Published in SPIE Proceedings Vol. 11288:
Quantum Sensing and Nano Electronics and Photonics XVII
Manijeh Razeghi; Jay S. Lewis; Giti A. Khodaparast; Pedram Khalili, Editor(s)

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