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Lithium Niobate - Enhanced Photoacoustic Spectroscopy.

ABSTRACT: In this work, we report on the novel employment of lithium niobate tuning forks as acoustic transducers in photoacoustic spectroscopy for gas sensing. The lithium niobate tuning fork (LiNTF) exhibits a fundamental resonance frequency of 39196.6 Hz and a quality factor Q = 5900 at atmospheric pressure. The possibility to operate the LiNTF as a photoacoustic wave detector was demonstrated targeting a water vapor absorption line falling at 7181.14 cm^-1 (1.39 µm). A noise equivalent concentration of 2 ppm was reached with a signal integration time of 20 s. These preliminary results open the path towards integrated photonic devices for gas sensing with LiNTF-based detectors on lithium niobate platforms.

SUBMITTER: Cantatore AFP

PROVIDER: S-EPMC10749900 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature

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Lithium Niobate - Enhanced Photoacoustic Spectroscopy.

Cantatore Aldo F P AFP Menduni Giansergio G Zifarelli Andrea A Patimisco Pietro P Gonzalez Miguel M Seren Huseyin R HR Spagnolo Vincenzo V Sampaolo Angelo A

Photoacoustics 20231130

In this work, we report on the novel employment of lithium niobate tuning forks as acoustic transducers in photoacoustic spectroscopy for gas sensing. The lithium niobate tuning fork (LiNTF) exhibits a fundamental resonance frequency of 39196.6 Hz and a quality factor Q = 5900 at atmospheric pressure. The possibility to operate the LiNTF as a photoacoustic wave detector was demonstrated targeting a water vapor absorption line falling at 7181.14 cm<sup>-1</sup> (1.39 µm). A noise equivalent conce ...[more]

PMID: 38149035

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