敏感激波管测量使用多通激光吸收光谱

IF 2 3区物理与天体物理 Q3 OPTICS

Applied Physics B Pub Date : 2025-09-01 DOI:10.1007/s00340-025-08545-5

Haojia Sun, Mohsin Raza, Sihao Wang, Dapeng Liu, Daxin Wen, Hongbo Ning, Wei Ren

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引用次数: 0

摘要

我们报告了一种灵敏的激光吸收诊断方法，用于激波管实验，使用单线光斑模式的多通道配置。多通道装置由两个镀银凹面镜组成，它们被放置在激波管的光学窗口外。多通道配置将有效路径长度增加了31倍。所有反射光束都在一个垂直于激波传播方向的平面内对齐，减轻了纹影和光束转向效应。我们通过测量反射激波后面的激波加热气体，使用可调谐激光吸收光谱测量7447.48 cm−1的水蒸气，验证了该方法。我们的方法为高温激波管/激光吸收实验提供了灵敏的物质检测。

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Sensitive shock tube measurements using multipass laser absorption spectroscopy

We report a sensitive laser absorption diagnostic method for shock tube experiments using a multipass configuration with a single-line spot pattern. The multipass setup consists of two silver-coated concave mirrors, which are placed outside the optical windows of the shock tube. The multipass configuration increases the effective path length by a factor of 31. All the reflected beams are aligned within a single plane that is perpendicular to the propagation direction of the shock wave, mitigating the Schlieren and beam steering effects. We validated the approach by measuring shock-heated gases behind reflected shock waves using tunable laser absorption spectroscopy of water vapor at 7447.48 cm^− 1. Our approach enables sensitive species detection for high-temperature shock tube/laser absorption experiments.

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来源期刊

Applied Physics B 物理-光学

CiteScore

4.00

自引率

4.80%

发文量

202

审稿时长

3.0 months

期刊介绍： Features publication of experimental and theoretical investigations in applied physics Offers invited reviews in addition to regular papers Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more 94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field. In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.