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Proceedings Paper

Slow terahertz light via resonant tunneling induced transparency in quantum well heterostructures
Author(s): Petar Tzenov; Christian Jirauschek
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Paper Abstract

We present a theoretical and computational investigation of the possibility of achieving slow terahertz light by exploiting the tunneling induced transparency (TIT) effect in suitably engineered quantum well heterostructure devices. We design such a meta-material and show how TIT could lead to large values of the group refractive index, unfortunately at the cost of strong field attenuation due to decoherence. As a suitable alternative, we propose a grating, consisting of a buffer and a quantum cascade amplifier regions, arranged in such a way as to achieve slow light and simultaneously compensate for the large signal losses. Our calculations show that a binary message could be reliably transmitted through this system, with non-critical reduction of the signal to noise ratio, as we achieve a slow-down factor of more than 70.

Paper Details

Date Published: 5 January 2017
PDF: 8 pages
Proc. SPIE 10226, 19th International Conference and School on Quantum Electronics: Laser Physics and Applications, 1022603 (5 January 2017); doi: 10.1117/12.2262367
Show Author Affiliations
Petar Tzenov, Technical Univ. of Munich (Germany)
Christian Jirauschek, Technical Univ. of Munich (Germany)

Published in SPIE Proceedings Vol. 10226:
19th International Conference and School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Sanka Gateva; Albena Daskalova; Alexandros Serafetinides, Editor(s)

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