Mie resonances to tailor random lasers

Anno: 2009

Autori: Garcia PD., Ibisate M., Sapienza R., Wiersma D., Lopez C.

Affiliazione autori: CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain;
CSIC UVigo, Unidad Asociada, Madrid, Spain;
European Lab Nonlinear Spect, I-50019 Florence, Italy;
INFM BEC, I-50019 Florence, Italy

Abstract: In this paper, we present an optical characterization of photonic glass-based random lasers. We show how the resonant behavior of diffuse light transport through such systems can tailor the lasing emission when a gain medium is added to the glass. A DNA-based organic dye is used as gain medium. The resonances in the transport mean-free path influence the lasing wavelength of the random laser. The laser wavelength is therefore controlled by the sphere diameter. Furthermore, the existence of Mie resonances reduces the necessary pump energy to reach the lasing threshold.

Giornale/Rivista: PHYSICAL REVIEW A

Volume: 80 (1)      Da Pagina: 013833  A: 013833

Maggiori informazioni: The work was supported by the EU through Network of Excellence Contract No. IST-2-511616-NOE (PHOREMOST), CICyT under Contracts No. NAN2004-08843-C05 and No. MAT2006-09062, the Spanish MEC ConsoliderQOIT under Contract No. CSD2006-0019, and the Comunidad de Madrid under Contract No. S-0505/ESP-0200.
Parole chiavi: Diffuse light; Gain medium; Laser wavelength; Lasing emissions; Lasing threshold; Lasing wavelength; Mean-free path; Mie resonance; Optical characterization; Organic dye; Photonic glass; Pump energies; Random lasers; Resonant behavior; Sphere diameter, Glass; Laser beams; Light transmission; Nucleic acids; Resonance, Lasers
DOI: 10.1103/PhysRevA.80.013833

Citazioni: 20
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-05
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