Low-threshold organic laser based on an oligofluorene truxene with low optical losses

Georgios Tsiminis; Yu Wang; Paul E. Shaw; A.L. Kanibolotsky; I.F. Perepichka; M.D. Dawson; P.J. Skabara; Graham A. Turnbull; Ifor D. W.  Samuel

doi:10.1063/1.3152782

Low-threshold organic laser based on an oligofluorene truxene with low optical losses

Georgios Tsiminis, Yu Wang, Paul E. Shaw, A.L. Kanibolotsky, I.F. Perepichka, M.D. Dawson, P.J. Skabara, Graham A. Turnbull, Ifor D. W. Samuel

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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/cm(2) and broad tunability across 25 nm in the blue part of the spectrum.

Original language	English
Article number	243304
Number of pages	3
Journal	Applied Physics Letters
Volume	94
Issue number	24
DOIs	https://doi.org/10.1063/1.3152782
Publication status	Published - 16 Jun 2009

Keywords

distributed feedback lasers
ellipsometry
laser tuning
optical losses
optical waveguides
organic semiconductors
refractive index
semiconductor lasers
spin coating
superradiance

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10.1063/1.3152782

Http scitationFinal published version, 434 KB

Hybrid organic semiconductor / gallium nitride / CMOS smart pixels arrays
Dawson, M. (Principal Investigator), Girkin, J. (Co-investigator), Gu, E. (Co-investigator), Pethrick, R. (Co-investigator), Skabara, P. (Co-investigator) & Watson, I. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/08/08 → 30/09/12
Project: Research
Physical Organic Chemistry: Opportunities In Synthesis, Materials And Pharmaceuticals (Science And Innovation Award)
Murphy, J. (Principal Investigator), Coombs, G. (Co-investigator), Ferguson, A. (Co-investigator) & Florence, A. (Co-investigator)
Scottish Funding Council SFC, EPSRC (Engineering and Physical Sciences Research Council)
1/09/07 → 30/10/12
Project: Research
Semiconductor-Based Hybrid Structures for Ultraviolet Micro-Devices
Dawson, M. (Principal Investigator), Calvez, S. (Co-investigator), Martin, R. (Co-investigator) & Watson, I. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/01/07 → 31/12/10
Project: Research

Cite this

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title = "Low-threshold organic laser based on an oligofluorene truxene with low optical losses",

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/cm(2) and broad tunability across 25 nm in the blue part of the spectrum.",

keywords = "distributed feedback lasers, ellipsometry, laser tuning, optical losses, optical waveguides, organic semiconductors, refractive index, semiconductor lasers, spin coating, superradiance",

author = "Georgios Tsiminis and Yu Wang and Shaw, {Paul E.} and A.L. Kanibolotsky and I.F. Perepichka and M.D. Dawson and P.J. Skabara and Turnbull, {Graham A.} and Samuel, {Ifor D. W.}",

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T1 - Low-threshold organic laser based on an oligofluorene truxene with low optical losses

AU - Tsiminis, Georgios

AU - Wang, Yu

AU - Shaw, Paul E.

AU - Kanibolotsky, A.L.

AU - Perepichka, I.F.

AU - Dawson, M.D.

AU - Skabara, P.J.

AU - Turnbull, Graham A.

AU - Samuel, Ifor D. W.

PY - 2009/6/16

Y1 - 2009/6/16

N2 - 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/cm(2) and broad tunability across 25 nm in the blue part of the spectrum.

AB - 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/cm(2) and broad tunability across 25 nm in the blue part of the spectrum.

KW - distributed feedback lasers

KW - ellipsometry

KW - laser tuning

KW - optical losses

KW - optical waveguides

KW - organic semiconductors

KW - refractive index

KW - semiconductor lasers

KW - spin coating

KW - superradiance

U2 - 10.1063/1.3152782

DO - 10.1063/1.3152782

M3 - Article

SN - 0003-6951

VL - 94

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 24

M1 - 243304

ER -

Low-threshold organic laser based on an oligofluorene truxene with low optical losses

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Keywords

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Projects

Hybrid organic semiconductor / gallium nitride / CMOS smart pixels arrays

Physical Organic Chemistry: Opportunities In Synthesis, Materials And Pharmaceuticals (Science And Innovation Award)

Semiconductor-Based Hybrid Structures for Ultraviolet Micro-Devices

Cite this