Research Data Leeds Repository

Dataset relating to "Free-space terahertz radiation from a LT-GaAs-on-quartz large-area photoconductive emitter".

Bacon, David R and Burnett, Andrew and Swithenbank, Matthew and Russell, Christopher and Li, Lianhe and Wood, Christopher and Cunningham, John and Linfield, Edmund and Davies, A Giles and Dean, Paul and Freeman, Joshua R (2016) Dataset relating to "Free-space terahertz radiation from a LT-GaAs-on-quartz large-area photoconductive emitter". University of Leeds. [Dataset] https://doi.org/10.5518/104

Dataset description

We report on large-area photoconductive terahertz (THz) emitters with a low-temperature-grown GaAs (LT-GaAs) active layer fabricated on quartz substrates using a lift-o ff transfer process. These devices are compared to the same LT-GaAs emitters when fabricated on the growth substrate. We find that the transferred devices show higher optical-to-THz conversion efficiencies and significantly larger breakdown fields, which we attribute to reduced parasitic current in the substrate. Through these improvements, we demonstrate a factor of 8 increase in emitted THz field strength at the maximum operating voltage. In addition we find improved performance when these devices are used for photoconductive detection, which we explain through a combination of reduced parasitic substrate currents and reduced space-charge build-up in the device.

Keywords: Photoconductive Emitters, Detectors, Z-cut Quartz, Time-domain Spectroscopy, THz-TDS
Subjects: F000 - Physical sciences > F300 - Physics > F360 - Optical physics
H000 - Engineering > H600 - Electronic & electrical engineering
F000 - Physical sciences > F200 - Materials science
Divisions: Faculty of Engineering > School of Electronic and Electrical Engineering
Related resources:
LocationType
https://doi.org/10.1364/OE.24.026986Publication
http://eprints.whiterose.ac.uk/107375/Publication
License: Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited: 02 Sep 2016 08:30
URI: https://archive.researchdata.leeds.ac.uk/id/eprint/76

Files

Documentation

Data

Research Data Leeds Repository is powered by EPrints
Copyright © 2021 University of Leeds