Mie resonances to tailor random lasers

Year: 2009

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

Autors Affiliation: 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.

Journal/Review: PHYSICAL REVIEW A

Volume: 80 (1)      Pages from: 013833  to: 013833

More Information: 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.
KeyWords: 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

Citations: 20
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