Herrnsdorf, Johannes, Wang, Yue orcid.org/0000-0002-2482-005X, McKendry, Jonathan et al. (9 more authors) (2013) Micro‐LED pumped polymer laser:a discussion of future pump sources for organic lasers. Laser & Photonics Reviews. pp. 1065-1078. ISSN 1863-8899
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.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014 The Authors |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 09 Jan 2019 16:40 |
Last Modified: | 16 Oct 2024 15:22 |
Published Version: | https://doi.org/10.1002/lpor.201300110 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1002/lpor.201300110 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:140843 |
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