Very compact tunable solid-state laser utilizing a thin-film organic semiconductor

Citation
S. Riechel et al., Very compact tunable solid-state laser utilizing a thin-film organic semiconductor, OPTICS LETT, 26(9), 2001, pp. 593-595
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS LETTERS
ISSN journal
0146-9592 → ACNP
Volume
26
Issue
9
Year of publication
2001
Pages
593 - 595
Database
ISI
SICI code
0146-9592(20010501)26:9<593:VCTSLU>2.0.ZU;2-G
Abstract
Optically pumped organic semiconductor lasers are fabricated by evaporation of a thin film of tris(8-hydroxyquinoline) aluminum (Alq(3)) molecularly d oped with a laser dye on top of a polyester substrate with an embossed grat ing structure. We achieve low-threshold, longitudinally monomode distribute d-feedback laser operation. By varying the film thickness of the organic se miconductor film, we can tune the wavelength of the surface-emitting laser over 44 nm. The low laser threshold allows the use of a very compact ah-sol id-state pump laser (approximate to 10 cm long). This concept opens up a wa y to obtain inexpensive lasers that are tunable over the whole visible rang e. (C) 2001 Optical Society of America.