Surface plasmon assisted directional laserlike emission from a highly scattering dye doped polymeric gain medium

Author

Alencar, M.A. ; Gomes, A.S.L. ; De Araujo, C.B.

Author_Institution

Dept. de Fisica, Univ. Fed. de Pernambuco, Recife, Brazil

fYear

2001

fDate

11-11 May 2001

Firstpage

173

Lastpage

174

Abstract

Summary form only given. The first observation of laserlike emission from a scattering medium consisting of TiO/sub 2/ particles in a dye solution was reported a few years ago. The emission from such system, which was named "laser paint" (LP) exhibits the characteristics of a multimode laser oscillator, although no resonant cavity is used. The phenomenon has been well studied but the LP-emission, which is almost spatially isotropic, would be more useful for applications if a scheme could be developed for obtaining directional emission. In this communication we report the first observation of quasi-directional LP-emission. The experiments were performed with a sample of a PMMA flat disc doped with Rhodamine.

Keywords

dye lasers; dyes; optical polymers; optical pumping; stimulated emission; surface plasmons; PMMA flat disc; Rhodamine; TiO/sub 2/; TiO/sub 2/ spheres; directional emission; highly scattering dye doped polymeric gain medium; laser paint; multimode laser oscillator; quasi-directional LP-emission; scattering medium; surface plasmon assisted directional laserlike emission; Dispersion; Fiber lasers; Laser beams; Laser excitation; Optical surface waves; Particle scattering; Photonic crystals; Plasmons; Polymers; Surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics and Laser Science Conference, 2001. QELS '01. Technical Digest. Summaries of Papers Presented at the

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-663-X

Type

conf

DOI

10.1109/QELS.2001.962026

Filename

962026