Temperature-controlled random laser action in liquid crystal infiltrated systems

Anno: 2002

Autori: Wiersma D., Cavalieri S.

Affiliazione autori: European Lab Nonlinear Spect, I-50019 Florence, Italy;
Ist Nazl Fis Mat, I-50019 Florence, Italy;
Univ Florence, Dept Phys,Florence, Italy

Abstract: We study an amplifying disordered dielectric material of which the scattering strength can be controlled externally via temperature. Such a system was realized by infiltrating liquid crystal and laser dye inside sintered glass powders. The random laser materials that were obtained this way can be brought below or above threshold by small changes in environment temperature, and the bandwidth of its emission can be tuned. We will go into the experimental details and the technical aspects of the realization of these systems, and show measurements on the diffusion constant and spectral properties of the emission.

Giornale/Rivista: PHYSICAL REVIEW E

Volume: 66 (5)      Da Pagina: 056612-1  A: 056612-5

Parole chiavi: Bandwidth; Diffusion; Light scattering; Magnetoresistance; Mathematical models; Phase transitions; Polarization; Temperature control, Infiltrated systems; Laser emission; Photonic band gaps; Photonic devices, Liquid crystals
DOI: 10.1103/PhysRevE.66.056612

Citazioni: 58
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18
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