Novel Antenna-Integrated Photodiodes With Strained Absorbers Designed for Use as Terahertz Sources

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...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 2011-01, Vol.17 (1), p.202-209
Main Authors: Henning, I D, Adams, M J, Vaughan, M, Abraham, T, Yun Sun, Dyson, A, Moodie, D G, Rogers, D C, Cannard, P J, Dosanjh, S, Skuse, M, Firth, R J
Format: Article
Language:English
Subjects:
Antennas
Broadband antennas
Capacitive sensors
Devices
Emission
Frequency
Holes
Lasers
Photodetectors
Photodiodes
planar antenna
Power generation
Quantum cascade lasers
strain
submillimeter-wave generation
Sun
Telecommunications
Temperature
Tunable circuits and devices
Wideband
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 slot-horn 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.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2010.2049196