Open AccessThermoelectric-cooled terahertz quantum cascade lasers
Author(s) -
Martin A. Kainz,
M. P. Semtsiv,
G. Tsianos,
Sergii Kurlov,
W. T. Masselink,
Sebastian Schönhuber,
Hermann Detz,
W. Schrenk,
K. Unterrainer,
G. Strasser,
A. M. Andrews
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.020688
Subject(s) - terahertz radiation , materials science , laser , quantum cascade laser , optoelectronics , cascade , lasing threshold , thermoelectric cooling , optics , photomixing , thermoelectric effect , terahertz spectroscopy and technology , far infrared laser , physics , terahertz metamaterials , chemistry , chromatography , thermodynamics
We demonstrate the first lasing emission of a thermo-electrically cooled terahertz quantum cascade laser (THz QCL). A high temperature three-well THz QCL emitting at 3.8 THz is mounted to a novel five-stage thermoelectric cooler reaching a temperature difference of ΔT = 124 K. The temperature and time-dependent laser performance is investigated and shows a peak pulse power of 4.4 mW and a peak average output power of 100 μW for steady-state operation.