Università degli Studi di Cagliari
Temperature tuning of nonlinear exciton processes in self-assembled oligophenyl nanofibers under laser action
QUOCHI, FRANCESCO;SABA, MICHELE;CORPINO, RICCARDO;MARCEDDU, MARCO;MURA, ANTONIO ANDREA;BONGIOVANNI, GIOVANNI LUIGI CARLO
2008-01-01
Abstract
Low-temperature suppression of nonlinear losses leads to improvement in nanosecond lasing threshold of self-assembled oligophenyl nanofibers by two orders of magnitude. Laser dynamics is revealed by time-resolved photoluminescence excited by femtosecond and nanosecond pulses. Strategies are discussed to extend low-threshold operation of nanofiber lasers to room temperature.
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