Mid-infrared gas absorption spectroscopy using a silicon germanium waveguide based chirped supercontinuum

IF 2.7 3区化学 Q2 CHEMISTRY, ANALYTICAL

Vibrational Spectroscopy Pub Date : 2024-06-03 DOI:10.1016/j.vibspec.2024.103705

Proficiency Munsaka, Peter Baricholo

引用次数: 0

Abstract

We report the simulations of coherent supercontinuum generation from 2.63 to 8.04 μm in a silicon germanium photonic waveguide. The influence of input quantum noise pulses on coherence of the generated spectra was investigated. A high value of first order degree of coherence (i.e. 0.98) on supercontinuum spectra was predicted numerically. Our mid-infrared simulated coherent chirped supercontinuum source was then used as the input light source in absorption spectroscopy of carbon dioxide and methane gases. The simulated absorbance spectra for these greenhouse gases have high molecular contrast, thanks to the intense, chirped supercontinuum used.

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利用基于硅锗波导的啁啾超连续波进行中红外气体吸收光谱分析

我们报告了在硅锗光子波导中生成 2.63 至 8.04 μm 相干超连续谱的模拟情况。我们研究了输入量子噪声脉冲对生成光谱相干性的影响。数值预测了超连续光谱的一阶相干度的高值（即 0.98）。我们的中红外模拟相干啁啾超连续光源随后被用作二氧化碳和甲烷气体吸收光谱的输入光源。由于使用了高强度的啁啾超连续光，这些温室气体的模拟吸收光谱具有很高的分子对比度。

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

Vibrational Spectroscopy 化学-分析化学

CiteScore

4.70

自引率

4.00%

发文量

103

审稿时长

52 days

期刊介绍： Vibrational Spectroscopy provides a vehicle for the publication of original research that focuses on vibrational spectroscopy. This covers infrared, near-infrared and Raman spectroscopies and publishes papers dealing with developments in applications, theory, techniques and instrumentation. The topics covered by the journal include: Sampling techniques, Vibrational spectroscopy coupled with separation techniques, Instrumentation (Fourier transform, conventional and laser based), Data manipulation, Spectra-structure correlation and group frequencies. The application areas covered include: Analytical chemistry, Bio-organic and bio-inorganic chemistry, Organic chemistry, Inorganic chemistry, Catalysis, Environmental science, Industrial chemistry, Materials science, Physical chemistry, Polymer science, Process control, Specialized problem solving.