Li, LH, Zhu, JX, Chen, L et al. (2 more authors) (2015) The MBE growth and optimization of high performance terahertz frequency quantum cascade lasers. Optics Express, 23 (3). 2720 - 2729. ISSN 1094-4087
Abstract
The technique of molecular beam epitaxy has recently been used to demonstrate the growth of terahertz frequency GaAs/AlGaAs quantum cascade lasers (QCL) with Watt-level optical output powers. In this paper, we discuss the critical importance of achieving accurate layer thicknesses and alloy compositions during growth, and demonstrate that precise growth control as well as run-to-run growth reproducibility is possible. We also discuss the importance of minimizing background doping level in maximizing QCL performance. By selecting high-performance active region designs, and optimizing the injection doping level and device fabrication, we demonstrate total optical (two-facet) output powers as high as 1.56 W.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015, Optical Society of America. This is an author produced version of a paper published in Optics Express. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 Mar 2015 13:46 |
Last Modified: | 09 Mar 2016 02:54 |
Published Version: | http://dx.doi.org/10.1364/OE.23.002720 |
Status: | Published |
Publisher: | Optical Society of America |
Refereed: | Yes |
Identification Number: | 10.1364/OE.23.002720 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83212 |