Free-standing thin-film waveguide for PIC-based mid-IR trace gas sensing (Conference Presentation)

Jehona Salaj; Marek Vlk; Jens Høvik; Astrid Aksnes; Jana Jágerská

doi:10.1117/12.2645124

22 May 2023 Free-standing thin-film waveguide for PIC-based mid-IR trace gas sensing (Conference Presentation)

Jehona Salaj, Marek Vlk, Jens Høvik, Astrid Aksnes, Jana Jágerská

Proceedings Volume 12327, SPIE Future Sensing Technologies 2023; 123270S (2023) https://doi.org/10.1117/12.2645124
Event: SPIE Future Sensing Technologies, 2023, Yokohama, Japan

Abstract

Mid-infrared tuneable diode laser absorption spectroscopy (TDLAS) realized with photonic integrated circuits (PICs) has the potential to create small and portable sensing devices with exceptional sensitivity. Here we present a photonic crystal (PhC) W5 waveguide-based sensor, which provides stronger interaction between the light and the analyte than a free space beam, as well as low scattering and material absorption losses. We demonstrate its performance by analysing the transmission spectra of two CO2 isotopes at 4345 nm.

Conference Presentation

Citation Download Citation

Jehona Salaj, Marek Vlk, Jens Høvik, Astrid Aksnes, and Jana Jágerská "Free-standing thin-film waveguide for PIC-based mid-IR trace gas sensing (Conference Presentation)", Proc. SPIE 12327, SPIE Future Sensing Technologies 2023, 123270S (22 May 2023); https://doi.org/10.1117/12.2645124

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