Castellano, F, Li, L, Linfield, EH et al. (4 more authors) (2015) THz waveguide adapters for efficient radiation out-coupling from double metal THz QCLs. Optics Express, 23 (4). 5190 - 5200. ISSN 1094-4087
Abstract
We report the development of on-chip optical components designed to improve the out-coupling of double-metal terahertz (THz) frequency quantum cascade lasers (QCLs). A visible reshaping of the optical beam is achieved, independent of the precise waveguide configuration, by direct incorporation of cyclic-olefin copolymer (COC) dielectric optical fibers onto the QCL facet. A major improvement is further achieved by incorporating a micromachined feed-horn waveguide, assembled around the THz QCL and integrated with a slit-coupler. In its first implementation, we obtain a ± 20° beam divergence, offering the potential for high-efficiency radiation coupling from a metal-metal waveguide into optical fibers.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited |
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: | 30 Apr 2015 15:40 |
Last Modified: | 19 Jan 2018 05:24 |
Published Version: | http://dx.doi.org/10.1364/OE.23.005190 |
Status: | Published |
Publisher: | Optical Society of America |
Identification Number: | 10.1364/OE.23.005190 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83802 |