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Proceedings Paper

Near infrared lasing in dye-doped polymeric microrings
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Paper Abstract

We demonstrate laser emission in polymer-based microrings doped with a near infrared emitting dye, 2-(6-(4-Dimethylaminophenyl)-2,4-neopentylene-1,3,5-hexatrienyl)-3-methyl-benzothiazolium perchlorat. We fabricate our poly(1-vinyl-2-pyrrolidone)-based microrings containing 0.5 wt % of the dye. They exhibit lasing at around 840 nm under transverse nanosecond photoexcitation at 532 nm. Optical feedback is provided by total internal reflection. The threshold for lasing is found to be 311 μJ/cm2. The cavity has a Q-factor larger than 2000, which is limited by the resolution of our detection system.

Paper Details

Date Published: 11 October 2005
PDF: 6 pages
Proc. SPIE 5958, Lasers and Applications, 59580Q (11 October 2005); doi: 10.1117/12.623008
Show Author Affiliations
Martin Djiango, Trinity College Dublin (Ireland)
Grace Jordan, Trinity College Dublin (Ireland)
Manuel Rüther, Trinity College Dublin (Ireland)
Takeyuki Kobayashi, Trinity College Dublin (Ireland)
Werner J. Blau, Trinity College Dublin (Ireland)
Yasuhiro Suzuki, Tohoku Univ. (Japan)
Toshikuni Kaino, Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 5958:
Lasers and Applications
Krzysztof M. Abramski; Antonio Lapucci; Edward F. Plinski, Editor(s)

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