NANOPHOTONICS


Nanophotonics deals with the light-matter interaction at the nanoscale. Our present work focus on:

. Studies of optically enhanced nonlinearities in nanostructured glasses containing silver, gold or rare earth doped ions;
. Studies and applications of random lasers exploiting dye embedded nanoparticles or nanostructured semiconductor materials;
. Fabrication and characterization of MOCVD grown semiconductor nanostructures;
. New concepts in photovoltaic cells.

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Pictorial description of conventional lasers vs random lasers.

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TiO2- based nanomembrane Random Laser
(Dominguez et al, Opt Express, 2012)

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Colloidal RL emission. LEFT: below threshold, RIGHT: above threshold
(from Lawandy, Gomes et al , Nature 1994)

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Flexible biocellulose based Random Laser
(Dos Santos et al, J. Appl. Phys, 2014)