Scientific Results

Resonance-driven random lasers

Year: 2009

Authors: Sapienza R., García P.D., Gottardo S., Blanco A., Wiersma D.S., López C.

Autors Affiliation: Institute de Ciencia de Matehales de Madrid, Unidad Asociada CSIC-U, Vigo Calle Sorjuana Inés de la Cruz 3, 28049 Madrid, Spain; European Laboratory for Nonlinear Spectroscopy, INFM-BEC, 50019 Sesto Fiorentino (Florence), Italy CORRESPONDENCE ADDRESS: Sapienza, R.; Institute de Ciencia de Matehales de Madrid, Unidad Asociada CSIC-U, Vigo Calle Sorjuana Inés de la Cruz 3, 28049 Madrid, Spain; email: sapienza@icmm.csic.es CONFERENCE NAME: CLEO/Europe – EQEC 2009 – European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference CONFERENCE DATE: 14 June 2009 through 19 June 2009 CONFERENCE LOCATION: Munich CONFERENCE CODE: 78301 ISBN: 9781424440801 LANGUAGE OF ORIGINAL DOCUMENT: English ABBREVIATED SOURCE TITLE: CLEO/Europe – EQEC – European Conf. Lasers Electro-Optics European Quantum Electron. Conf. DOCUMENT TYPE: Conference Paper PUBLICATION STAGE: Final

Abstract: A random laser is a system formed by a random assembly of elastic scatters dispersed into an optical gain medium. We consider the case where the scattering is resonant. Our system, a photonic glass, can sustain scattering resonances over the gain frequency window, since it is formed by equal shape and equal size particles (monodisperse spheres) of relatively high refractive index contrast that are randomly assembled. The unique resonant scattering of this material allows controlling the laser emission via the diameter of the particles and their refractive index. Our system is therefore a random laser with a-priori designed lasing peak within the gain curve.

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KeyWords: Lasers; Laser beams; Coherent random
DOI: 10.1109/CLEOE-EQEC.2009.5191950

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