20.500.12556/DKUM-90311 Photothermal gas sensing with a custom-made, fiber-coupled Fabry–Pérot etalon Growing awareness of the adverse health effects of air pollution has increased the demand for reliable, sensitive, and mass-producible sensor systems. Photothermal interferometry has shown great promise for sensitive, selective, and miniaturized gas sensing solutions. This work describes the development of a macroscopic photothermal sensor system with a sensor head consisting of a low-cost, custom-made, and fiber-coupled Fabry–Pérot etalon. The sensor was tested with NO2, achieving a 3σ limit of detection (LOD) of approximately 370 ppbv (1 s). Exhibiting little drift, a LOD of 15 ppbv is achievable for 200 s integration time. Compensating for the excitation power, the normalized noise equivalent absorption was calculated to be 1.4 × 10−8cm−1 W√Hz. The sensor system is not limited to NO2 but can be used for any gas or aerosol species by exchanging the excitation laser source. photothermal gas etalon interferometry Fabry-Perot fototermalni plin etalon interferometrija true false true Society of Photo-optical Instrumentation Engineers Angleški jezik Slovenski jezik https://www.spiedigitallibrary.org/journals/optical-engineering/volume-63/issue-06/064101/Photothermal-gas-sensing-with-a-custom-made-fiber-coupled-FabryP%C3%A9rot/10.1117/1.OE.63.6.064101.full#_=_ © The Authors Članek v reviji 2024-08-29 07:48:14 2024-08-29 07:48:15 2025-05-27 03:08:57 0000-00-00 00:00:00 2024 0 0 10 str. št. 6 Vol. 63 June 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-12-23 2024-05-20 2024-06-04 535 198009859 10.1117/1.OE.63.6.064101 0091-3286 064101_1_(1).pdf 064101_1_(1).pdf 1 D662A00B3006F95910B5E17B89885FAA 54b720757a35de1e2e697df10d593b566bf9c04fd2864bb9ad6a085e6ac3ba2a 6bcd545c-39fa-11f0-80b9-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=191249 https://www.spiedigitallibrary.org/journals/optical-engineering/volume-63/issue-06/064101/Photothermal-gas-sensing-with-a-custom-made-fiber-coupled-FabryP%c3%a9rot/10.1117/1.OE.63.6.064101.full 0 7b25d4a0-39fa-11f0-80b9-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=191250 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0