Numerical analysis of spectroscopic studies using supercontinuum generated by noise-like pulses

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-05-11 DOI:10.1016/j.rinp.2025.108298

Christian A. Salcedo-Rodriguez , Eloisa Gallegos-Arellano , Julian M. Estudillo-Ayala , Juan M. Sierra-Hernandez , Jose D. Filoteo-Razo , Maximino R. Tapia-Garcia , Daniel A. Ramos-Gonzalez , Roberto Rojas-Laguna , Juan C. Hernandez-Garcia

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Abstract

Multiple Supercontinuum (SC) spectra generated by noise-like pulses (NLPs) were subjected to numerical analysis to assess their viability for gas detection. The numerical setup employed for this study was a figure-eight fiber laser using a mode-locking configuration. This configuration included a nonlinear optical loop mirror, which functions as an amplitude filter, and a double-clad erbium-ytterbium fiber, which serves as the active element. The absorption spectrum of the gas C₂H₂ in the near-infrared region, obtained from the HITRAN database, was analyzed for the proposed numerical setup. The analysis revealed distinct outcomes in terms of sensitivity, depending on the type of NLP generated through polarization manipulation. Some spectra maintained most of the gas rovibrational lines and frequency components, thus facilitating the proper gas identification. Simulations were also performed for CH₄, showing a visible absorption spectrum, thereby substantiating that these sources powered by NLPs can detect various gases with a high degree of selectivity.

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类噪声脉冲产生的超连续光谱研究的数值分析

对类噪声脉冲（nlp）产生的多个超连续谱（SC）进行了数值分析，以评估其在气体探测中的可行性。本研究采用的数值设置是采用锁模配置的8字形光纤激光器。这种结构包括一个非线性光环路镜，作为一个振幅滤波器，和一个双包层铒镱光纤，作为有源元件。对从HITRAN数据库中获得的气体C2H2在近红外区域的吸收光谱进行了分析。分析显示，根据极化操作产生的NLP类型，敏感性方面的结果不同。一些光谱保留了大部分气体的振动谱线和频率成分，有利于气体的正确识别。对CH4也进行了模拟，显示出可见的吸收光谱，从而证实这些由nlp供电的源可以高度选择性地检测各种气体。

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

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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