Valavanis, A, Han, YJ, Brewster, N et al. (9 more authors) Waveguide-integrated Terahertz Quantum Cascade Lasers for use as Local Oscillators. In: 36th ESA Antenna Workshop, 06-09 Oct 2015, ESTEC, Noordwijk, The Netherlands. (Unpublished)
Abstract
Terahertz-frequency quantum cascade lasers (THz QCLs) are compact sources of 1–5 THz radiation, which show great promise for use as local oscillators in satellite-borne heterodyne radiometers. We present a waveguide-integration scheme, in which a THz QCL is mounted in a copper heat-sink block, with radiation outcoupled into a precision micromachined rectangular waveguide. Electrical bias is provided by an integrated SMA connector and mounting points are provided for attachment to a cryocooler and a temperature sensor. The integration scheme is mechanically robust and is shown to have negligible impact on the thermal performance or threshold current of the device. The emitted beam quality is significantly improved, compared with that of a conventional device, with single-lobed profile with divergence <20 degrees.
Metadata
Item Type: | Conference or Workshop Item |
---|---|
Authors/Creators: |
|
Keywords: | Terahertz radiation; quantum cascade lasers; waveguides |
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Funding Information: | Funder Grant number NERC NE/L01243X/1 EPSRC EP/J002356/1 Royal Society WM110032 UK Space Agency RP10G0327D13 Royal Society WM150029 |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Oct 2015 13:41 |
Last Modified: | 20 Jan 2018 08:26 |
Status: | Unpublished |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:90848 |