Observation of Lévy distribution and replica symmetry breaking in random lasers from a single set of measurements
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2016
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Random lasers have been recently exploited as a photonic platform for studies of complex systems.
This cross-disciplinary approach opened up new important avenues for the understanding of randomlaser
behavior, including Lévy-type distributions of strong intensity fluctuations and phase transitions
to a photonic spin-glass phase. In this work, we employ the Nd:YBO random laser system to unveil,
from a single set of measurements, the physical origin of the complex correspondence between the
Lévy fluctuation regime and the replica-symmetry-breaking transition to the spin-glass phase. A novel
unexpected finding is also reported: the trend to suppress the spin-glass behavior for high excitation
pulse energies. The present description from first principles of this correspondence unfolds new
possibilities to characterize other random lasers, such as random fiber lasers, nanolasers and small
lasers, which include plasmonic-based, photonic-crystal and bio-derived nanodevices. The statistical
nature of the emission provided by random lasers can also impact on their prominent use as sources
for speckle-free laser imaging, which nowadays represents one of the most promising applications of
random lasers, with expected progress even in cancer research.
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GOMES, Anderson S. L. et al. Observation of Lévy distribution and replica symmetry breaking in random lasers from a single set of measurements. Scientific Reports, London, v. 6, e27987, 2016. DOI: 10.1038/srep27987. Disponível em: https://pubmed.ncbi.nlm.nih.gov/27292095/. Acesso em: 28 abr. 2023.