Room Temperature Lasing of Multi-Stage Quantum-Cascade Lasers at 8 μm Wavelength

Room-temperature lasing at a wavelength of 8 μm in multistage quantum-cascade lasers pumped by current pulses is demonstrated. A quantum-cascade laser heterostructure based on the In 0.53 Ga 0.47 As/A l0.48 In 0.5 2As alloy heteropair, matched to an InP substrate, is grown by molecular-beam epitaxy...

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Published inSemiconductors (Woodbury, N.Y.) Vol. 52; no. 8; pp. 1082 - 1085
Main Authors Babichev, A. V., Gladyshev, A. G., Kurochkin, A. S., Kolodeznyi, E. S., Sokolovskii, G. S., Bougrov, V. E., Karachinsky, L. Ya, Novikov, I. I., Bousseksou, A. G., Egorov, A. Yu
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.08.2018
Springer Nature B.V
Subjects
ALLOYS
Cladding
CURRENT DENSITY
Current pulses
Epitaxial growth
INDIUM PHOSPHIDES
LANTHANUM SELENIDES
LASERS
Lasing
Magnetic Materials
Magnetism
MATERIALS SCIENCE
MOLECULAR BEAM EPITAXY
Molecular chains
Physics
Physics and Astronomy
Physics of Semiconductor Devices
Quantum cascade lasers
Room temperature
Substrates
TEMPERATURE RANGE 0273-0400 K
THRESHOLD CURRENT
Threshold currents
WAVELENGTHS
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Summary:Room-temperature lasing at a wavelength of 8 μm in multistage quantum-cascade lasers pumped by current pulses is demonstrated. A quantum-cascade laser heterostructure based on the In 0.53 Ga 0.47 As/A l0.48 In 0.5 2As alloy heteropair, matched to an InP substrate, is grown by molecular-beam epitaxy and consists of 50 identical cascades placed in a waveguide with air as the top cladding. A threshold current density of ~5.1 kA/cm 2 at a temperature of 300 K is obtained in ridge lasers with a cavity length of 1.4 mm and a ridge width of 24 μm.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782618080031