Influence of low temperature on white light emission from graphene-based microchip

The laser-induced white emission of the graphene-based microchip was investigated under near-infrared region laser irradiation. The emission was characterized by an excitation threshold and an exponential dependence on the pump laser power. A decrease in temperature caused an increase in both the nu...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2023-03, Vol.49 (3), p.330-334
Main Authors: Chaika, M., Tomala, R., Oleszko, M., Stręk, W.
Format: Article
Language:English
Subjects:
Emission analysis
Graphene
Infrared lasers
Light emission
Low temperature
White light
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Summary:The laser-induced white emission of the graphene-based microchip was investigated under near-infrared region laser irradiation. The emission was characterized by an excitation threshold and an exponential dependence on the pump laser power. A decrease in temperature caused an increase in both the number of absorbed photons and the emission threshold. This dependence can be explained by the multiphoton ionization process in (sp2, sp3) hybridized domains.
ISSN:1063-777X
1090-6517
DOI:10.1063/10.0017235