Continuous wave operation of InAs-based quantum cascade lasers at 20 μm

Authors :: Alexei N. Baranov
A. Meguekam
H. Nguyen Van
Roland Teissier
Z. Loghmari
Michael Bahriz
Institut d’Electronique et des Systèmes (IES)
Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
Composants à Nanostructure pour le moyen infrarouge (NANOMIR)
Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
Source :: Applied Physics Letters, Applied Physics Letters, American Institute of Physics, 2019, 115 (15), pp.151101. ⟨10.1063/1.5119242⟩
Publication Year :: 2019
Publisher :: AIP Publishing, 2019.
Abstract: International audience; We report low threshold continuous wave (CW) operation of InAs/AlSb quantum cascade lasers emitting around 20 lm. The laser cavity was made of a plasmon-enhanced dielectric waveguide with cladding layers made of n-InAs. The devices exhibited a threshold current density of 1.38 kA/cm 2 at the maximum temperature of CW operation of 240 K and an output power of 14 mW/facet at T ¼ 80 K. In pulsed mode, the lasers operated up to 380 K with a threshold current density of 1.15 kA/cm 2 at room temperature.

Tools