Colloidal semi-conductor nanocrytals in microcavity for lasing and biosensing

Agnès Maître; Charlie Kersuzan; Sergei Celaj; Thomas Pons

doi:10.1117/12.2653204

17 March 2023 Colloidal semi-conductor nanocrytals in microcavity for lasing and biosensing

Agnès Maître, Charlie Kersuzan, Sergei Celaj, Thomas Pons

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.

Conference Presentation

Citation Download Citation

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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