HS Quartz-enhanced Photoacoustic Spectroscopy Sensor Employing a Liquid-nitrogen-cooled THz Quantum Cascade Laser Operating in Pulsed Mode

Overview

Journal Photoacoustics

Date 2021 Jan 13

PMID 33437615

Citations 11

Authors

Angelo Sampaolo

Chenren Yu

Tingting Wei

Andrea Zifarelli

Marilena Giglio

Pietro Patimisco

Huan Zhu

Haiqing Zhu

Li He

Hongpeng Wu

Lei Dong

Gangyi Xu

Vincenzo Spagnolo

Affiliations

Soon will be listed here.

Abstract

In this work, we report on a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor for hydrogen sulfide (HS) detection, exploiting a liquid-nitrogen-cooled THz quantum cascade laser (QCL) operating in pulsed mode. The spectrophone was designed to accommodate a THz QCL beam and consisted of a custom quartz tuning fork with a large prong spacing, coupled with acoustic resonator tubes. The targeted rotational transition falls at 2.87 THz (95.626 cm), with a line-strength of 5.53 10 cm/mol. A THz QCL peak power of 150 mW was measured at a heat sink temperature of 81 K, pulse width of 1 μs and repetition rate of 15.8 kHz. A QEPAS record sensitivity for HS detection in the THz range of 360 part-per-billion in volume was achieved at a gas pressure of 60 Torr and 10 s integration time.

Citing Articles

Open-closed single-tube on-beam tuning-fork-enhanced fiber-optic photoacoustic spectroscopy.

Pan Y, Fu L, Zhang J, Lu P Photoacoustics. 2024; 39:100639.

PMID: 39687931 PMC: 11647945. DOI: 10.1016/j.pacs.2024.100639.

Ultra-highly sensitive dual gases detection based on photoacoustic spectroscopy by exploiting a long-wave, high-power, wide-tunable, single-longitudinal-mode solid-state laser.

Qiao S, He Y, Sun H, Patimisco P, Sampaolo A, Spagnolo V Light Sci Appl. 2024; 13(1):100.

PMID: 38693126 PMC: 11063167. DOI: 10.1038/s41377-024-01459-5.

Methodology and applications of acousto-electric analogy in photoacoustic cell design for trace gas analysis.

Liu X, Wu H, Dong L Photoacoustics. 2023; 30:100475.

PMID: 37007859 PMC: 10064240. DOI: 10.1016/j.pacs.2023.100475.

Multi-mechanism collaboration enhanced photoacoustic analyzer for trace HS detection.

Guo M, Zhao X, Chen K, Cui D, Zhang G, Li C Photoacoustics. 2023; 29:100449.

PMID: 36654963 PMC: 9841283. DOI: 10.1016/j.pacs.2023.100449.

Characterization of HS QEPAS detection in methane-based gas leaks dispersed into environment.

Olivieri M, Menduni G, Giglio M, Sampaolo A, Patimisco P, Wu H Photoacoustics. 2022; 29:100438.

PMID: 36582842 PMC: 9792567. DOI: 10.1016/j.pacs.2022.100438.

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