Light-induced thermo-elastic effect in quartz tuning forks exploited as a photodetector in gas absorption spectroscopy

被引：85

作者：

Dello Russo, Stefano ^{[1
,2
,3
]}

Zifarelli, Andrea ^{[1
,2
,3
]}

Patimisco, Pietro ^{[1
,2
,3
]}

Sampaolo, Angelo ^{[1
,2
,3
]}

Wei, Tingting ^{[1
]}

Wu, Hongpeng ^{[1
]}

Dong, Lei ^{[1
]}

Spagnolo, Vincenzo ^{[1
,2
,3
]}

机构：

[1] Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China

[2] Univ Bari, PolySenSe Lab, Phys Dept, Via Amendola 173, I-70126 Bari, Italy

[3] Politecn Bari, CNR IFN, Via Amendola 173, I-70126 Bari, Italy

来源：

OPTICS EXPRESS | 2020年 / 28卷 / 13期

基金：

欧盟地平线“2020”; 中国国家自然科学基金;

关键词：

DIODE-LASER; SENSOR;

D O I：

10.1364/OE.393292

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a study of light-induced thermo-elastic effects occurring in quartz tuning forks (QTFs) when exploited as near-infrared light detectors in a tunable diode laser absorption spectroscopy sensor setup. Our analysis showed that when the residual laser beam transmitted by the absorption cell is focused on the QTF surface area where the maximum strain field occurs, the QTF signal-to-noise ratio (SNR) is proportional to the strain itself and to the QTF accumulation time. The SNR was also evaluated when the pressure surrounding the QTF was lowered from 700 Torr to 5 Torr, resulting in an enhancement factor of similar to 4 at the lowest pressure. At 5 torr, the QTF employed as light detector showed an SNR similar to 6.5 times higher than that obtained by using a commercially available amplified photodetector. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：19074 / 19084

页数：11

共 23 条

[1] Highly sensitive and selective CO sensor using a 2.33 μm diode laser and wavelength modulation spectroscopy [J].