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Type: Journal article
Title: Micro-LED pumped polymer laser: a discussion of future pump sources for organic lasers
Author: Herrnsdorf, J.
Wang, Y.
McKendry, J.
Gong, Z.
Massoubre, D.
Guilhabert, B.
Tsiminis, G.
Turnbull, G.
Samuel, I.
Laurand, N.
Gu, E.
Dawson, M.
Citation: Laser and Photonics Reviews, 2013; 7(6):1065-1078
Publisher: Wiley-VCH Verlag
Issue Date: 2013
ISSN: 1863-8880
Organisation: Institute for Photonics & Advanced Sensing (IPAS)
Statement of
Johannes Herrnsdorf, Yue Wang, Jonathan J. D. McKendry, Zheng Gong, David Massoubre, Benoit Guilhabert, Georgios Tsiminis, Graham A. Turnbull, Ifor D. W. Samuel, Nicolas Laurand, Erdan Gu and Martin D. Dawson
Abstract: Optical pumping conditions for organic solid-state lasers (OSLs) are discussed with particular emphasis on the use of gallium nitride based light-emitting diodes (LEDs) as pump sources. LEDs operate in a regime where the pump should be optimized for a short rise time and high peak intensity, whereas fall time and overall pulse duration are less important. Lasers pumped with this approach need to have very low thresholds which can now be routinely created using (one-dimensional) distributed feedback lasers. In this particular case stripe-shaped excitation with linearly polarized light is beneficial. Arrays of micron-sized flip-chip LEDs have been arranged in an appropriate stripe shape and the array dimensions were chosen such that the divergence of LED emission does not cause a loss in peak intensity. These micro-LED arrays have successfully been used to pump OSLs with thresholds near 300 W/cm2 (∼9 ns rise time, 35 ns pulse duration), paving the way for compact arrays of indirectly electrically pumped OSLs.
Keywords: Organic semiconductor laser
light-emitting diode
indirect electrical pumping
hybrid organic/inorganic optoelectronics
Rights: © 2013 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
DOI: 10.1002/lpor.201300110
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