Optimization of the Spectral Composition of Radiation from a Compact CO2 Laser for an Optoacoustic Gas Analyzer for SF6

IF 0.9 Q4 OPTICS

Atmospheric and Oceanic Optics Pub Date : 2024-01-17 DOI:10.1134/S1024856023060258

K. G. Zenov, M. B. Miroshnichenko, A. I. Karapuzikov, E. G. Nehorosheva

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Abstract

A simplified mathematical model and the results of experimental studies on the spectral composition of radiation of a compact waveguide CO₂ laser with RF excitation for a optoacoustic laser gas analyzer are presented. The aim is to improve measurement accuracy by eliminating unwanted 10R branch lines from the laser spectrum. Laser radiation signatures are measured under various resonator and active medium parameters without the use of additional selection elements. It is demonstrated that optimal signatures can be achieved by selecting appropriate gas mixture pressure, transmittance coefficient of the output mirror, and optimal resonator length, which can be obtained by varying the nominal (base) length within a range of 2 mm. The effectiveness of optimizing the spectral composition of laser radiation is practically confirmed by statistical results for 64 lasers. This opens up new possibilities for improving the measurement accuracy of the laser optoacoustic SF₆ gas analyzer and extending its application in various fields of science and technology.

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优化用于 SF6 光声气体分析仪的紧凑型 CO2 激光器的辐射光谱组成

摘要介绍了用于光声激光气体分析仪的射频激励紧凑型波导 CO2 激光器辐射光谱组成的简化数学模型和实验研究结果。目的是通过消除激光光谱中不需要的 10R 支线来提高测量精度。在不使用额外选择元件的情况下，测量了各种谐振器和有源介质参数下的激光辐射特征。结果表明，通过选择适当的混合气体压力、输出镜的透射系数和最佳谐振器长度（可在 2 毫米范围内改变标称（基座）长度），可以获得最佳特征。64 个激光器的统计结果实际证实了优化激光辐射光谱组成的有效性。这为提高激光光声 SF6 气体分析仪的测量精度和扩大其在各个科技领域的应用提供了新的可能性。

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来源期刊

Atmospheric and Oceanic Optics OPTICS-

CiteScore

2.40

自引率

42.90%

发文量

期刊介绍： Atmospheric and Oceanic Optics is an international peer reviewed journal that presents experimental and theoretical articles relevant to a wide range of problems of atmospheric and oceanic optics, ecology, and climate. The journal coverage includes: scattering and transfer of optical waves, spectroscopy of atmospheric gases, turbulent and nonlinear optical phenomena, adaptive optics, remote (ground-based, airborne, and spaceborne) sensing of the atmosphere and the surface, methods for solving of inverse problems, new equipment for optical investigations, development of computer programs and databases for optical studies. Thematic issues are devoted to the studies of atmospheric ozone, adaptive, nonlinear, and coherent optics, regional climate and environmental monitoring, and other subjects.