Research Data Leeds Repository

Dataset associated with ‘Enhanced delivery of terahertz frequency radiation from a quantum cascade laser within a dry 3He dilution refrigerator'

Vaughan, Matthew (2023) Dataset associated with ‘Enhanced delivery of terahertz frequency radiation from a quantum cascade laser within a dry 3He dilution refrigerator'. University of Leeds. [Dataset] https://doi.org/10.5518/1381

Dataset description

We report on significant enhancements to the integration of terahertz (THz) quantum cascade lasers (QCL) and THz detection with a two-dimensional electron (2DEG) within a dilution refrigerator obtained by the inclusion of a multi-mesh 6THz low-pass filter to block IR radiation, a Winston cone to focus light output, and gating the 2DEG for optimised sensitivity. We show that these improvements allow us to obtain a >2.5 times reduced sample electron temperature (160mK compared with 430 mK previously), during cyclotron resonance (CR) measurements of a 2DEG under QCL illumination. This opens up a route to performing sub-100mK experiments using excitation by THz QCLs.

Keywords:	THz, QCL, cryogenic, millikelvin, Condensed Matter, 2DEG
Subjects:	F000 - Physical sciences > F300 - Physics F000 - Physical sciences > F300 - Physics > F320 - Chemical physics > F321 - Solid-state physics F000 - Physical sciences > F300 - Physics > F340 - Mathematical & theoretical physics > F342 - Quantum mechanics
Divisions:	Faculty of Engineering and Physical Sciences > School of Electronic and Electrical Engineering
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	11 Dec 2023 15:24
URI:	http://archive.researchdata.leeds.ac.uk/id/eprint/1203
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 Vaughan, Matthew https://orcid.org/0000-0002-8336-2183 University of Leeds Type of data: Dataset Research funders: EPSRC Grant numbers: EP/P021859/1, EP/W028921/1, EP/V004743/1 Publication date: 2023 Resource language: English Publisher: University of Leeds Contact Email Address: eenmv@leeds.ac.uk Last Modified: 11 Dec 2023 23:35

Files

Documentation

readme [2kB] readme [2kB] readme [2kB] 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: 2kB

Data

Low temperature Electrical transport [4MB] Low temperature Electrical transport [4MB] Low temperature Electrical transport [4MB] Visible to: Anyone File name: Low_temperature_Electrical_transport.zip Content type: Data Description: Electrical transport measurements of the 2 dimensional electron gas sample at cryogenic temperatures Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 4MB

QMC Filter [1MB] QMC Filter [1MB] QMC Filter [1MB] Visible to: Anyone File name: QMC_filter.zip Content type: Data Description: Transmission spectrum for the QMC filter, used to estimate the filtering effectiveness for 290K IR radiation Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 1MB