Lithium Niobate – Enhanced Photoacoustic Spectroscopy

IF 7.1 1区医学 Q1 ENGINEERING, BIOMEDICAL

Photoacoustics Pub Date : 2023-11-30 DOI:10.1016/j.pacs.2023.100577

Aldo F.P. Cantatore, Giansergio Menduni, Andrea Zifarelli, Pietro Patimisco, Miguel Gonzalez, Huseyin R. Seren, Vincenzo Spagnolo, Angelo Sampaolo

引用次数: 0

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.

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铌酸锂-增强光声光谱

在这项工作中，我们报告了铌酸锂音叉作为声换能器在气敏光声光谱中的新应用。铌酸锂音叉(LiNTF)在常压下的基本共振频率为39196.6 Hz，品质因子Q = 5900。实验证明了LiNTF作为光声波探测器的可能性，其目标是在7181.14 cm−1(1.39µm)处的水蒸气吸收线。信号积分时间为20s，噪声当量浓度为2ppm。这些初步结果为在铌酸锂平台上使用基于lintf的探测器进行气体传感的集成光子器件开辟了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Photoacoustics Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

11.40

自引率

16.50%

发文量

审稿时长

53 days

期刊介绍： The open access Photoacoustics journal (PACS) aims to publish original research and review contributions in the field of photoacoustics-optoacoustics-thermoacoustics. This field utilizes acoustical and ultrasonic phenomena excited by electromagnetic radiation for the detection, visualization, and characterization of various materials and biological tissues, including living organisms. Recent advancements in laser technologies, ultrasound detection approaches, inverse theory, and fast reconstruction algorithms have greatly supported the rapid progress in this field. The unique contrast provided by molecular absorption in photoacoustic-optoacoustic-thermoacoustic methods has allowed for addressing unmet biological and medical needs such as pre-clinical research, clinical imaging of vasculature, tissue and disease physiology, drug efficacy, surgery guidance, and therapy monitoring. Applications of this field encompass a wide range of medical imaging and sensing applications, including cancer, vascular diseases, brain neurophysiology, ophthalmology, and diabetes. Moreover, photoacoustics-optoacoustics-thermoacoustics is a multidisciplinary field, with contributions from chemistry and nanotechnology, where novel materials such as biodegradable nanoparticles, organic dyes, targeted agents, theranostic probes, and genetically expressed markers are being actively developed. These advanced materials have significantly improved the signal-to-noise ratio and tissue contrast in photoacoustic methods.