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arXiv · 2312.11491

Lithium niobate-enhanced laser photoacoustic spectroscopy

Haoyang Lin·Wenguo Zhu·Yongchun Zhong·Jieyuan Tang·Huihui Lu·Jianhui Yu·Huadan Zheng
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Abstract

In this paper, the photoacoustic spectroscopy technique based on lithium niobate crystals is initially reported, to our knowledge. A novel dual-cantilever tuning fork structure and new electrodes have been designed using Y-cut 128{\deg} blackened lithium niobate wafers. The tuning fork, with a resonant frequency of only 10.46 kHz and a prong gap of 1 mm, is engineered to achieve superior performance in photoacoustic spectroscopy. In the demonstration experiment, acetylene was detected using a 1.53 um semiconductor laser, achieving a detection limit of about 9 ppb within a one-second integration time.

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Haoyang Lin, Wenguo Zhu, Yongchun Zhong, Jieyuan Tang, Huihui Lu, Jianhui Yu, Huadan Zheng. 2023-12-02. Lithium niobate-enhanced laser photoacoustic spectroscopy. https://arxiv.org/abs/2312.11491

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