通过量子红外光谱仪对有机蒸汽进行开路检测

IF 5.4 1区 物理与天体物理 Q1 OPTICS
APL Photonics Pub Date : 2024-09-05 DOI:10.1063/5.0220707
Simon Neves, Adimulya Kartiyasa, Shayantani Ghosh, Geoffrey Gaulier, Luca La Volpe, Jean-Pierre Wolf
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引用次数: 0

摘要

近年来,量子傅立叶变换红外(QFTIR)光谱法已成为光谱中红外区域传统吸收光谱法的替代方法。通过利用非线性迈克尔逊干涉仪中光子对的诱导相干性和光谱相关性,该技术为有机气体的实际检测提供了广阔的前景。然而,为使 QFTIR 光谱仪更接近家用或现场使用而开展的研究却很少。在这项工作中,我们首次使用 QFTIR 光谱仪对环境空气中的多种干扰有机气体进行开路检测。我们建造了一个非线性迈克尔逊干涉仪,其臂长 1.7 米,以增加吸收长度,并结合了用于气体痕量检测的经典差分吸收光谱分析技术。因此,我们确定了我们的光谱仪对丙酮、甲醇和乙醇蒸汽的灵敏度,并演示了对环境空气中释放的这些气体混合物的准确识别。通过隔夜测量和跟踪不同气体平均浓度的变化,我们证明了这一特性会随着时间的推移而保持不变。这些结果构成了 QFTIR 光谱仪作为有机气体检测器的第一个使用案例,因此是在实际应用中开发此类检测器的一个重要里程碑。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Open-path detection of organic vapors via quantum infrared spectroscopy
In recent years, quantum Fourier transform infrared (QFTIR) spectroscopy has emerged as an alternative to conventional absorption spectroscopy in the mid-infrared region of the spectrum. By harnessing induced coherence and spectral correlations of photon pairs in a nonlinear Michelson interferometer, this technique offers promising potential for the practical detection of organic gases. However, little research was conducted to bring QFTIR spectrometers closer to domestic or in-field usage. In this work, we present the first use of a QFTIR spectrometer for open-path detection of multiple interfering organic gases in ambient air. We built a nonlinear Michelson interferometer with 1.7 m-long arms to increase the absorption length, coupled with analysis techniques from classical differential absorption spectroscopy used for gas-traces detection. We thus characterize our spectrometer’s sensitivity to acetone, methanol, and ethanol vapors and demonstrate the accurate identification of mixtures of these gases released in ambient air. We show this characteristic is preserved over time by performing a measurement overnight and tracking the evolution of different gases’ average concentrations. These results constitute the first use-case of a QFTIR spectrometer as a detector of organic gases and, thus, represent an important milestone toward the development of such detectors in practical situations.
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来源期刊
APL Photonics
APL Photonics Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
10.30
自引率
3.60%
发文量
107
审稿时长
19 weeks
期刊介绍: APL Photonics is the new dedicated home for open access multidisciplinary research from and for the photonics community. The journal publishes fundamental and applied results that significantly advance the knowledge in photonics across physics, chemistry, biology and materials science.
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