http://www.cnr.it/ontology/cnr/individuo/prodotto/ID4036

Resonance-driven random lasing (Articolo in rivista)

Type

Label

Anno

Alternative label

Gottardo, S; Sapienza, R; Garcia, PD; Blanco, A; Wiersma, DS; Lopez, C (2008)
Resonance-driven random lasing
in Nature photonics (Print)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Gottardo, S; Sapienza, R; Garcia, PD; Blanco, A; Wiersma, DS; Lopez, C (literal)

Pagina inizio

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Rivista

Note

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\"[Gottardo, Stefano; Wiersma, Diederik S.] European Lab Nonlinear Spect, I-50019 Florence, Italy; INFM BEC, I-50019 Florence, Italy; [Sapienza, Riccardo; Garcia, Pedro D.; Blanco, Alvaro; Lopez, Cefe] Inst Ciencia Mat Madrid CSIC, Madrid 28049, Spain; CSIC, UVigo, Madrid 28049, Spain (literal)

Titolo

Abstract

A random laser is a system formed by a random assembly of elastic scatterers dispersed into an optical gain medium(1). The multiple light scattering replaces the standard optical cavity of traditional lasers and the interplay between gain and scattering determines the lasing properties. All random lasers studied to date have consisted of irregularly shaped or polydisperse scatterers, with a certain average scattering strength that was constant over the frequency window of the laser(2-4). In this letter we consider the case where the scattering is resonant. We demonstrate that randomly assembled monodisperse spheres can sustain scattering resonances over the gain frequency window, and that the lasing wavelength can therefore be controlled by means of the diameter and refractive index of the spheres. The system is therefore a random laser with an a priori designed lasing peak within the gain curve. (literal)

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