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Phys Rev Lett. 2007 Oct 12;99(15):153903. Epub 2007 Oct 12.

Random fiber laser.

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  • 1Programa de Pós-Graduação em Engenharia Elétrica and Faculdade de Computação e Informática, Universidade Presbiteriana Mackenzie, São Paulo-SP 01302-907, Brazil.


We investigate the effects of two-dimensional confinement on the lasing properties of a classical random laser system operating in the incoherent feedback (diffusive) regime. A suspension of 250 nm rutile (TiO2) particles in a rhodamine 6G solution was inserted into the hollow core of a photonic crystal fiber generating the first random fiber laser and a novel quasi-one-dimensional random laser geometry. A comparison with similar systems in bulk format shows that the random fiber laser presents an efficiency that is at least 2 orders of magnitude higher.

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