Compact, spherical mirror-based dense astigmatic-like pattern multipass cell design aided by a genetic algorithm
We propose a unique way to design multipass cells (MPCs), which combines cost-efficient spherical mirrors with the high-density pattern of astigmatic mirrors. Such functionality was accomplished using at least three standard spherical mirrors appropriately tilted, which breaks the parallelism betwee...
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Veröffentlicht in: | Optics express 2021-08, Vol.29 (16), p.26127-26136 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | We propose a unique way to design multipass cells (MPCs), which combines cost-efficient spherical mirrors with the high-density pattern of astigmatic mirrors. Such functionality was accomplished using at least three standard spherical mirrors appropriately tilted, which breaks the parallelism between them. A genetic algorithm (GA) supported the cell configuration optimization. A 16 m and 23.8 m optical path length (OPL) MPC was developed, practically realized, and proved by a time-of-flight (TOF) experiment to demonstrate the principle. Finally, CO 2 detection at 2004nm obtaining 0.4 ppmv limit of detection (LOD) using wavelength modulation spectroscopy (WMS) with 10 s averaging was performed. |
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ISSN: | 1094-4087 1094-4087 |
DOI: | 10.1364/OE.432541 |