Generalized optical design of two-spherical-mirror multi-pass cells with dense multi-circle spot patterns

被引：39

作者：

Cui, Ruyue ^{[1
,2
]}

Dong, Lei ^{[1
,2
]}

Wu, Hongpeng ^{[1
,2
]}

Chen, Weidong ^{[3
]}

Tittel, Frank K. ^{[4
]}

机构：

[1] Shanxi Univ, State Key Lab Quantum Opt & Quantum Opt Devices, Inst Laser Spect, Taiyuan 030006, Peoples R China

[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China

[3] Univ Littoral Cote dOpale, Lab Physicochim Atmosphere, F-59140 Dunkerque, France

[4] Rice Univ, Dept Elect & Comp Engn, 6100 Main St, Houston, TX 77005 USA

来源：

APPLIED PHYSICS LETTERS | 2020年 / 116卷 / 09期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

INTERBAND CASCADE LASER; SENSITIVE DETECTION; SENSOR; METHANE;

D O I：

10.1063/1.5145356

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a set of practical multi-circle spot patterns produced by two-spherical-mirror multi-pass cells (MPCs). Such a set of intricate spot patterns takes full account of the evolution and deformation of spot shapes caused by aberrations on two spherical mirror surfaces by means of a multi-ray calculation model, thus avoiding spot overlaps and reducing an etalon effect. An eight- and nine-multi-circle spot pattern was demonstrated experimentally in order to verify the validity of the calculated results. Furthermore, a 2f spectrum measurement of ambient methane was performed using the eight-multi-circle spot pattern MPC to verify the practicability. An approach to search for multi-circle spot patterns in a two-spherical-mirror MPC is discussed in detail. A set of dense spot patterns results in sensitive, low-cost, compact trace gas sensors based on MPCs, which can be used to implement a large-scale deployment of distributed sensor networks for monitoring pollutants or to realize handheld mobile sensor devices for safety inspection, leakage detection, and medical diagnostics. Published under license by AIP Publishing.

引用

页数：4

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