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:	Location Type https://doi.org/10.1364/OE.24.026986 Publication 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:	http://archive.researchdata.leeds.ac.uk/id/eprint/76
Additional details Additional details Creators: 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 Burnett, Andrew https://orcid.org/0000-0003-2175-1893 Swithenbank, Matthew https://orcid.org/0000-0002-6146-1818 Russell, Christopher https://orcid.org/0000-0002-7322-8255 Li, Lianhe Wood, Christopher https://orcid.org/0000-0003-1679-5410 Cunningham, John https://orcid.org/0000-0002-1805-9743 Linfield, Edmund https://orcid.org/0000-0001-6912-0535 Davies, A Giles https://orcid.org/0000-0002-1987-4846 Dean, Paul https://orcid.org/0000-0003-3257-620X Freeman, Joshua R https://orcid.org/0000-0002-5493-6352 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 Address: el09d2b@leeds.ac.uk Last Modified: 02 Jun 2017 08:27

Files

Documentation

Dataset content [368B] Dataset content [368B] Dataset content [368B] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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] Visible to: 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