Kudryashov, S., Danilov, P., Smirnov, N., Kuzmin, E., Rupasov, A., Khmelnitskii, R., Krasin, G., Mushkarina, I., & Gorevoy, A. (2023). Photoluminescent Microbit Inscripion inside Dielectric Crystals by Ultrashort Laser Pulses for Archival Applications. Preprints. https://doi.org/10.20944/preprints202305.0799.v1
Chicago/Turabian Style
Kudryashov, S., Irina Mushkarina and Alexey Gorevoy. 2023 "Photoluminescent Microbit Inscripion inside Dielectric Crystals by Ultrashort Laser Pulses for Archival Applications" Preprints. https://doi.org/10.20944/preprints202305.0799.v1
Abstract
Inscription of embedded photoluminescent microbits inside a bulk natural diamond, LiF and CaF2 crystals was performed in sub-filamentation (geometrical focusing) regime by 525nm 0.2ps laser pulses focused by 0.65NA micro-objective as a function of pulse energy, exposure and inter-layer separation. The resulting microbits were visualized by 3Dscanning confocal Raman/photoluminescence microscopy as conglomerates of photo-induced quasi-molecular color centers and tested regarding their annealing. Minimal lateral and longitudinal microbit separations, enabling their robust read-out, were measured in LiF as 1.5 and 13 microns, respectively, to be improved regarding information storage capacity by more elaborate focusing systems. These findings pave a way to novel optical storage platforms utilizing ultrashort-pulse laser inscription of photoluminescent microbits as carriers of archival memory.
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