Affiliation:
1. Ukraine Academy of Science
2. Kyiv Taras Shevchenko University
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.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
Reference7 articles.
1. N.M. Lawandy, R.M. Balachandran, A.S.L. Gomes, E. Sauvain: Nature Vol. 36 (1994), p.436.
2. A.Z. Genack and J.M. Drake: Nature Vol. 368 (1994), p.400.
3. I.P. Ilchishin, E.A. Tikhonov, M.T. Shpak: Sov. Phys. -JETP Lett. Vol. 32 (1980), №1, p.27.
4. G.A. Berger, M. Kempe, A.G. Genack: Phys. Rev. E, Vol. 56 (1997), №5, p.6118.
5. E.O. Tikhonov, Vasil P. Yashchuk, O.A. Prygodjuk, V.I. Bezrodny: Solid State Phenomena Vol. 94 (2003), p.295.
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献