Paper Title:
Multiple Scattering Active Media as Small-Size Frequency Tunable Sources of Stimulated Emission
  Abstract

We investigated the lasing spectra of multiple scattering active media based on solid polymer solutions of rhodamin 6G with embedded scattering silica particles of mean diameter 500nm. Lasing in these samples appears without any cavity and arises even in rather small active volume 0.05*0.5*0.5mm3. In a thick sample positive feedback for lasing is provided mainly by multiple scattering of light. In a thin sample the feedback is provided both by multiple scattering of light on the particles and light reflection from the sample surface. It is found that the lasing spectra peak wavelength can be varied within 13nm by varying sample thickness in a range 0.1 -1.65mm. A method of continuos laser tuning by wedge-like sample shift with respect to the pump beam is proposed. The presented results are aimed at the development of a new type of microlaser.

  Info
Periodical
Solid State Phenomena (Volumes 99-100)
Edited by
Witold Lojkowski and John R. Blizzard
Pages
77-82
DOI
10.4028/www.scientific.net/SSP.99-100.77
Citation
E. Tikhonov, V. P. Yashchuk, O. Prygodjuk, V. Bezrodny, "Multiple Scattering Active Media as Small-Size Frequency Tunable Sources of Stimulated Emission", Solid State Phenomena, Vols. 99-100, pp. 77-82, 2004
Online since
July 2004
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