Tsiminis, G., Wang, Y., Shaw, P. E., Kanibolotsky, A. L., Perepichka, I. F., Dawson, M. D., Skabara, P. J. , Turnbull, G. A. and Samuel, I. D. W. (2009) Low-threshold organic laser based on an oligofluorene truxene with low optical losses. Applied Physics Letters, 94(24), 243304. (doi: 10.1063/1.3152782)
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Abstract
A blue-emitting distributed feedback laser based on a star-shaped oligofluorene truxene molecule is presented. The gain, loss, refractive index, and (lack of) anisotropy are measured by amplified spontaneous emission and variable-angle ellipsometry. The waveguide losses are very low for an organic semiconductor gain medium, particularly for a neat film. The results suggest that truxenes are promising for reducing loss, a key parameter in the operation of organic semiconductor lasers. Distributed feedback lasers fabricated from solution by spin-coating show a low lasing threshold of 270 W/cm2 and broad tunability across 25 nm in the blue part of the spectrum.
Item Type: | Articles |
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Additional Information: | The authors would like to acknowledge support for this work from the EPSRC HYPIX project (grant number EP/F059922/1 and EP/F05999X/1). |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Skabara, Professor Peter |
Authors: | Tsiminis, G., Wang, Y., Shaw, P. E., Kanibolotsky, A. L., Perepichka, I. F., Dawson, M. D., Skabara, P. J., Turnbull, G. A., and Samuel, I. D. W. |
College/School: | College of Science and Engineering > School of Chemistry |
Journal Name: | Applied Physics Letters |
Publisher: | AIP Publishing |
ISSN: | 0003-6951 |
ISSN (Online): | 1077-3118 |
Published Online: | 16 June 2009 |
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