Bayraklı, İsmailAkman, HaticeSarı, Filiz2021-05-172021-05-172021https:/dx.doi.org/10.1364/AO.417569https://hdl.handle.net/20.500.12451/7949Bayraklı, İsmailAn easy-to-use highly sensitive sensor is reported for trace gas analysis. A near-infrared fiber-coupled external cavity diode laser in combination with a photoacoustic spectroscopy cell and a cavity enhanced absorption spectroscopy cell is used for analysis of trace gases. A software platform for direct absorption and wavelength modulation spectroscopy is developed in order to identify and quantify the molecules and to achieve a higher signal-to-noise ratio. Considering all of these features, the main advantage of our system is to analyze two different samples simultaneously and quickly. Trace gas measurement is assessed, and a detection limit of 1.5 ppb at 6528.76 cm(-1) for ammonia is demonstrated. Furthermore, the sensor with our software platform can be easily used outside of the laboratory, for example, in hospitals.eninfo:eu-repo/semantics/closedAccessDiode LaserArticle6072093209910.1364/AO.41756933690303Q2WOS:000624969800038Q3