Research Data Leeds Repository

Citation

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 and Physical Sciences > School of Electronic and Electrical Engineering
Related resources:	Location Type https://doi.org/10.1364/OE.24.026986 Publication https://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
Additional details Additional details Creators or authors: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Bacon, David R. https://orcid.org/0000-0001-8385-0614 University of Leeds https://ror.org/024mrxd33 ror Burnett, Andrew https://orcid.org/0000-0003-2175-1893 University of Leeds https://ror.org/024mrxd33 ror Swithenbank, Matthew https://orcid.org/0000-0002-6146-1818 University of Leeds https://ror.org/024mrxd33 ror Russell, Christopher https://orcid.org/0000-0002-7322-8255 University of Leeds https://ror.org/024mrxd33 ror Li, Lianhe https://orcid.org/0000-0003-4998-7259 University of Leeds https://ror.org/024mrxd33 ror Wood, Christopher https://orcid.org/0000-0003-1679-5410 University of Leeds https://ror.org/024mrxd33 ror Cunningham, John https://orcid.org/0000-0002-1805-9743 University of Leeds https://ror.org/024mrxd33 ror Linfield, Edmund https://orcid.org/0000-0001-6912-0535 University of Leeds https://ror.org/024mrxd33 ror Davies, A. Giles https://orcid.org/0000-0002-1987-4846 University of Leeds https://ror.org/024mrxd33 ror Dean, Paul https://orcid.org/0000-0003-3257-620X University of Leeds https://ror.org/024mrxd33 ror Freeman, Joshua R. https://orcid.org/0000-0002-5493-6352 University of Leeds https://ror.org/024mrxd33 ror Type of data: Dataset Research funders: EPSRC Grant numbers: EP/L504993/1, EP/J002356/1, EP/I026657/1, EP/J017671/1 Publication date: 2016 Resource language: English Metadata language: English Research project title: Time-resolved pump-probe investigation of the Terahertz Quantum Cascade laser Publisher: University of Leeds Contact email: el09d2b@leeds.ac.uk Last Modified: 22 Aug 2024 08:56

Files

Documentation

Dataset content [368B] Dataset content [368B] Dataset content [368B] Security: Anyone File name: readme.txt Content type: Documentation Mime-Type: text/plain License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 368B

Data

Bulk-SI-GaAs IV [10kB] Bulk-SI-GaAs IV [10kB] Bulk-SI-GaAs IV [10kB] Security: Anyone File name: Table1_Bulk-SI-GaAs.dat Content type: Data Description: 5 columns containing: Voltage and current (in amps and microamps) for light and dark conditions. License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 10kB

LoG device IV [10kB] LoG device IV [10kB] LoG device IV [10kB] Security: Anyone File name: Table1_LT-GaAs-on-SI-GaAs_LoG.dat Content type: Data Description: 5 columns containing: Voltage and current (in amps and microamps) for light and dark conditions. License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 10kB

LoQ device IV [10kB] LoQ device IV [10kB] LoQ device IV [10kB] Security: Anyone File name: Table1_LT-GaAs-on-Z-Cut-Quartz_LoQ.dat Content type: Data Description: 5 columns containing: Voltage and current (in amps and microamps) for light and dark conditions. License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 10kB

Figure 2 inset data [46kB] Figure 2 inset data [46kB] Figure 2 inset data [46kB] Security: Anyone File name: Figure2_Inset.dat Content type: Data Description: 3 columns containing: IV characteristics for LoQ and LoG License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 46kB

Figure 2 main data [20kB] Figure 2 main data [20kB] Figure 2 main data [20kB] Security: Anyone File name: Figure2_Main.dat Content type: Data Description: 3 columns containing: Time-domain scans, plotted against electric field, for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 20kB

Figure 3 inset data [458B] Figure 3 inset data [458B] Figure 3 inset data [458B] Security: Anyone File name: Figure3_Inset.dat Content type: Data Description: 3 columns containing: Output amplitude as a function of incident optical power for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 458B

Figure 3 main data [3kB] Figure 3 main data [3kB] Figure 3 main data [3kB] Security: Anyone File name: Figure3_Main.dat Content type: Data Description: 3 columns containing: Pk-Pk output field as a function of applied field for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 3kB

Figure 4 inset data [3kB] Figure 4 inset data [3kB] Figure 4 inset data [3kB] Security: Anyone File name: Figure4_Inset.dat Content type: Data Description: 3 columns containing: Time-domain scans plotted against electric field, for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 3kB

Figure 4 main data [800B] Figure 4 main data [800B] Figure 4 main data [800B] Security: Anyone File name: Figure4_Main.dat Content type: Data Description: 3 columns containing: Pk-Pk output field as a function of applied field for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 800B

Figure 5a data [295B] Figure 5a data [295B] Figure 5a data [295B] Security: Anyone File name: Figure5a.dat Content type: Data Description: 3 columns containing: Detected Pk-Pk current as a function of incident optical power for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 295B

Figure 5b data [441B] Figure 5b data [441B] Figure 5b data [441B] Security: Anyone File name: Figure5b.dat Content type: Data Description: 3 columns containing: Detected Pk-Pk current as a function of applied field (on emitter) for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 441B

Figure 5c data [6kB] Figure 5c data [6kB] Figure 5c data [6kB] Security: Anyone File name: Figure5c.dat Content type: Data Description: 4 columns containing: Time-domain scans plotted against detected current, for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 6kB

Figure 5d data [12kB] Figure 5d data [12kB] Figure 5d data [12kB] Security: Anyone File name: Figure5d.dat Content type: Data Description: 4 columns containing: Simulated time-domain scans for LT-GaAs with SI-GaAs substrate License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 12kB

Figure 6 inset data [23kB] Figure 6 inset data [23kB] Figure 6 inset data [23kB] Security: Anyone File name: Figure6_Inset.dat Content type: Data Description: 3 columns containing: Frequency spectra for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 23kB

Figure 6 main data [151kB] Figure 6 main data [151kB] Figure 6 main data [151kB] Security: Anyone File name: Figure6_Main.dat Content type: Data Description: 3 columns containing: Time-domain scans for LoQ and LoG devices License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 151kB