Metamaterial/graphene amplitude and frequency modulators for the active control of terahertz quantum cascade lasers

Degl'Innocenti, R. and Kindness, S.J. and Almond, N.W. and Wei, B. and Wallis, R. and Kamboj, V.S. and Braeuninger-Weimer, P. and Hofmann, S. and Beere, H.E. and Ritchie, D.A. (2018) Metamaterial/graphene amplitude and frequency modulators for the active control of terahertz quantum cascade lasers. Proceedings of SPIE, 10756. ISSN 0277-786X

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Abstract

Hybrid metamaterial/graphene amplitude and frequency modulators have been implemented as external optoelectronic mirrors in external cavity configurations with terahertz quantum cascade lasers (QCLs). These devices' tunability is accomplished via the interplay between metamaterial resonant units, normally engineered in mm-size arrays, and graphene. The integration of these devices in external cavity QCLs offers unique emission features and realizes an unprecedented studied regime. The implementation of an external amplitude modulation allows the full switching of laser emission in single mode operation by electrostatically gating graphene. The introduction of more dispersive tunable architectures in frequency modulators yields additionally an all-electronic spectral laser bistability. © 2018 SPIE.

Item Type:
Journal Article
Journal or Publication Title:
Proceedings of SPIE
Additional Information:
R. Degl'Innocenti, Stephen J. Kindness, Nikita W. Almond, Binbin Wei, Robert Wallis, Varun S. Kamboj, Philipp Braeuninger-Weimer, Stephan Hofmann, Harvey E. Beere, David A. Ritchie "Metamaterial/graphene amplitude and frequency modulators for the active control of terahertz quantum cascade lasers" Proceedings Volume 10756, Terahertz Emitters, Receivers, and Applications IX; 107560U (2018) https://doi.org/10.1117/12.2320506 Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States Copyright notice format: Copyright 2018) Society of Photo-Optical Instrumentation Engineers. 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 modification of the content of the paper are prohibited. DOI abstract link format: http://dx.doi.org/10.1117/12.2320506
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ID Code:
131982
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Deposited On:
15 Mar 2019 09:10
Refereed?:
Yes
Published?:
Published
Last Modified:
28 May 2020 07:36