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Data associated with 'Frequency tunability and spectral control in terahertz quantum cascade lasers with phase-adjusted finite-defect-site photonic lattices’

Kundu, Iman and Dean, Paul and Valavanis, Alexander and Li, Lianhe and Han, Yingjun and Linfield, Edmund and Davies, A Giles (2017) Data associated with 'Frequency tunability and spectral control in terahertz quantum cascade lasers with phase-adjusted finite-defect-site photonic lattices’. University of Leeds. [Dataset] https://doi.org/10.5518/146

Dataset description

This dataset contains experimental data presented in the paper titled 'Frequency tunability and spectral control in terahertz quantum cascade lasers with phase-adjusted finite-defect-site photonic lattices'. The effect of finite-defect-site photonic lattices (PLs) on the spectral emission of terahertz (THz) frequency quantum cascade lasers (QCLs), is studied both theoretically and experimentally. A central π-phase adjusted defect is incorporated into the PL to slectively favor emission within the photonic bandgap. The effect of the PL duty cycle and the longitudinal position of such PLs relative the QCL cavity is also investigated, and is used to demonstrate three distinct spectral behaviors: single mode emission from QCLs in the range 2.2−5 THz, with a side-mode suppression ratio of 40 dB and exhibiting continuous frequency tuning over >8 GHz; discrete tuning between two engineered emission modes separated by ~40 GHz; and multiple-mode emission with an engineered logitudinal frequency spacing between the emission lines.

Keywords: semiconductor lasers, quantum cascade lasers, laser tuning, terahertz, gratings
Subjects: H000 - Engineering > H600 - Electronic & electrical engineering
Divisions: Faculty of Engineering > School of Electronic and Electrical Engineering > Institute of Microwaves and Photonics
Related resources:
LocationType
http://eprints.whiterose.ac.uk/116616/Publication
https://doi.org/10.1109/TTHZ.2017.2707800Publication
Date deposited: 15 Jun 2017 14:03
URI: https://archive.researchdata.leeds.ac.uk/id/eprint/157

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