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Novel antenna-integrated photodiodes with strained absorbers designed for use as terahertz sources

Henning, ID and Adams, MJ and Vaughan, M and Abraham, T and Sun, Y and Dyson, A and Moodie, DG and Rogers, DC and Cannard, PJ and Dosanjh, S and Skuse, M and Firth, RJ (2011) 'Novel antenna-integrated photodiodes with strained absorbers designed for use as terahertz sources.' IEEE Journal on Selected Topics in Quantum Electronics, 17 (1). 202 - 209. ISSN 1077-260X

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Abstract

We present experimental results on the performance of antenna-integrated photodiodes intended for use as photomixers to provide a tunable broadband source of terahertz (THz) radiation. In a balanced strain-absorber structure, we show that the introduction of strain has proved effective in enhancing the performance at frequencies above 500 GHz. A comparison of strained and unstrained devices confirms this claim. These structures are integrated with a range of antennas, including log periodic and slothorn types, designed for wideband THz emission. Using the devices as photomixers for the outputs from a DFB laser and an external cavity laser in the 1550 nm telecom window, tunable emission is demonstrated over the range from 100 GHz to 1.8 THz. © 2010 IEEE.

Item Type: Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Jim Jamieson
Date Deposited: 30 Jan 2012 16:41
Last Modified: 11 Jul 2018 10:15
URI: http://repository.essex.ac.uk/id/eprint/2176

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