New generation of tuning forks for quartz-enhanced photoacoustic spectroscopy

P. Patimisco; A. Sampaolo; M. Giglio; S. dello Russo; A. Elefante; G. Menduni; V. Passaro; H. Rossmadl; V. Mackowiak; Bruno Gross; Alex Cable; F. K. Tittel; V. Spagnolo

doi:10.1117/12.2507932

1 February 2019 New generation of tuning forks for quartz-enhanced photoacoustic spectroscopy

P. Patimisco, A. Sampaolo, M. Giglio, S. dello Russo, A. Elefante, G. Menduni, V. Passaro, H. Rossmadl, V. Mackowiak, Bruno Gross, Alex Cable, F. K. Tittel, V. Spagnolo

Author Affiliations +

Proceedings Volume 10926, Quantum Sensing and Nano Electronics and Photonics XVI; 109260D (2019) https://doi.org/10.1117/12.2507932
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

We report on the performance of new quartz tuning fork (QTF) designs optimized for quartz-enhanced photoacoustic spectroscopy (QEPAS). We investigated the impact on resonance properties of prong geometries differing from the standard rectangular one. We proposed a QTF with T-shaped prongs and a QTF with prongs having rectangular grooves carved on the surface. QTFs were implemented in a QEPAS sensor and performances were compared in terms of signalto-noise ratio (SNR). Then, QTFs were acoustically coupled with single- and dual-tube micro-resonator systems. A record x60 SNR enhancement factor with respect to the bare QTF was achieved with QTF having T-shaped prongs.

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P. Patimisco, A. Sampaolo, M. Giglio, S. dello Russo, A. Elefante, G. Menduni, V. Passaro, H. Rossmadl, V. Mackowiak, Bruno Gross, Alex Cable, F. K. Tittel, and V. Spagnolo "New generation of tuning forks for quartz-enhanced photoacoustic spectroscopy", Proc. SPIE 10926, Quantum Sensing and Nano Electronics and Photonics XVI, 109260D (1 February 2019); https://doi.org/10.1117/12.2507932

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