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17 March 2023 HCG VCSELs as one-device gas detectors
Magdalena Marciniak, Lukasz Piskorski, Weronika Glowadzka, Tomasz Czyszanowski
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Proceedings Volume PC12439, Vertical-Cavity Surface-Emitting Lasers XXVII; PC1243908 (2023) https://doi.org/10.1117/12.2647724
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Recently, we presented the idea of a single-element gas detector based on a VCSEL, in which the top mirror is realised as subwavelength grating (SWG). The presence of gas in the vicinity of the grating causes a change in its reflectivity, which leads to a change in the quality factor of the laser cavity. We investigate the possibility of a realisation of a single-element detector based on the SWG VCSEL, in which a Fano-resonance occurs in the SWG. We analyse the performance of such a detector based on the example of an antimonide VCSEL designed as an ethane detector.
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Magdalena Marciniak, Lukasz Piskorski, Weronika Glowadzka, and Tomasz Czyszanowski "HCG VCSELs as one-device gas detectors", Proc. SPIE PC12439, Vertical-Cavity Surface-Emitting Lasers XXVII, PC1243908 (17 March 2023); https://doi.org/10.1117/12.2647724
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KEYWORDS
Sensors
Vertical cavity surface emitting lasers
Reflectivity
Mirrors
Numerical simulations
Optoelectronic devices
Optoelectronics
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