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<p>The paper presents an optical system designed to improve the sensitivity of compact Raman gas analyzers based on multimode diode lasers. The factors that influence its effectiveness are considered. It is shown that the application of such a multipass system increases in the intensity of Raman signals by more than 4 times. The conditions for increasing this gain are given.</p>

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Multipass Excitation System for Raman Spectroscopy of Gases

  • 期刊论文

  • 发表日期：

    2026年2月27日

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  • M. A. Kostenko,
  • D. V. Petrov

摘要

The paper presents an optical system designed to improve the sensitivity of compact Raman gas analyzers based on multimode diode lasers. The factors that influence its effectiveness are considered. It is shown that the application of such a multipass system increases in the intensity of Raman signals by more than 4 times. The conditions for increasing this gain are given.