Multiple Scattering Active Media as Small-Size Frequency Tunable Sources of Stimulated Emission

Abstract:

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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 et al., "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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Price:

$35.00

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