Photonic Nanojet Generation in Transmission and Reflection Mode

Abstract:

This paper is related to the problem of enhancing the optical and functional performance of luminescent gas sensors via its excitation by photonic nanojets. The novel sensor structure consisting of the array of alumina microparticles covered by optical sensitive layer was designed. The parameters of the photonic nanojets generated in both transmission and reflection modes has been numerically end experimentally studied. It was shown that PNJ in reflection mode demonstrates an unexpectedly high enhancement of photoluminescence. It was obtained that the excitation of the sensitive layer by photonic nanojets extends the limit of gaseous ammonia detection up to 0.1 ppm for reflection mode and up to 0.02 ppm for transmission mode.

• Periodical: Solid State Phenomena (Volume 312)
• Pages: 213-220
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.312.213
• Online since: November 2020
• Authors: Alexander A. Sergeev*, Ksenia A. Sergeeva, Aleksandr Vladimirovich Nepomniaschiy, Sergey S. Voznesenskiy
• Keywords: Dielectric Photonic, Fabrication, Light Localization, Luminescence, Photonic Nanojets

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