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17 March 2023 Colloidal semi-conductor nanocrytals in microcavity for lasing and biosensing
Agnès Maître, Charlie Kersuzan, Sergei Celaj, Thomas Pons
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Proceedings Volume PC12410, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2023; PC124100I (2023) https://doi.org/10.1117/12.2653204
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
We present here a new kind of laser microcavity to be used as a biosensor. It is based on dielectric pillar fabricated by photolithography with a negative photoresist resist, transparent and having a high index in the visible. The pillars are infiltrated by colloidal core/shell CdSe/CdS nanocrystals or nanoplatelets with appropriate surface ligands so that the nanoemitters get into the pillars, but remain close to the surface and homogeneously dispersed. The nanoemitter fluorescence excite whispering gallery resonant modes. We present here numerical and experimental results demonstrating the quality of the pillars and evidencing the resonant modes.
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Agnès Maître, Charlie Kersuzan, Sergei Celaj, and Thomas Pons "Colloidal semi-conductor nanocrytals in microcavity for lasing and biosensing", Proc. SPIE PC12410, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2023, PC124100I (17 March 2023); https://doi.org/10.1117/12.2653204
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KEYWORDS
Optical microcavities
Biosensing
Laser optics
Luminescence
Molecules
Nanocrystals
Optical lithography
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