Double metal waveguide InGaAs/AlInAs quantum cascade lasers emitting at 24 μm

Journal Article · Mon Sep 22 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4896542· OSTI ID:22350744

Beck, M.

A study on far-infrared In{sub 0.53}Ga{sub 0.47}As/Al{sub 0.48}In{sub 0.52}As quantum cascade lasers operating with a double metal waveguide is presented. To increase the laser upper state lifetime, a diagonal bound-to-continuum transition scheme is used in the active region. The observed threshold current density at 50 K is 5.7 kA/cm{sup 2}, and the maximum operation temperature is 240 K. The laser emission wavelength is 24.4 μm, which is the longest wavelength in the mid-infrared quantum cascade lasers so far reported.

• OSTI ID: 22350744
• Journal Information: Applied Physics Letters, Vol. 105, Issue 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ARSENIC COMPOUNDS
CURRENT DENSITY
DENSITY
EMISSION
FAR INFRARED RADIATION
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
INDIUM ARSENIDES
INDIUM COMPOUNDS
LASERS
LIFETIME
METALS
THRESHOLD CURRENT
WAVEGUIDES
WAVELENGTHS