2016
DOI: 10.1063/1.4939551
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InAs based terahertz quantum cascade lasers

Abstract: We demonstrate terahertz lasing emission from a quantum cascade structure, realized with InAs/AlAs0.16Sb0.84 heterostructures. Due to the lower effective electron mass, InAs based active regions are expected to provide a higher optical gain compared to structures consisting of GaAs or InGaAs. The growth by molecular beam epitaxy enabled the fabrication of monolayer-thick barriers, required for the active region, which is based on a 3-well resonant phonon depletion design. Devices were processed in a double-met… Show more

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Cited by 44 publications
(31 citation statements)
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“…Авторам ра-боты [12] удалось создать терагерцевый квантовый кас-кадный лазер, обладающий требуемыми оптическими характеристиками. Его активным элементом является гетероструктура InAs/AlAs 0.16 Sb 0.84 , выращиваемая с по-мощью МЛЭ, в ходе которой удается получать области толщиной до одного монослоя.…”
Section: спектроскопияunclassified
“…Авторам ра-боты [12] удалось создать терагерцевый квантовый кас-кадный лазер, обладающий требуемыми оптическими характеристиками. Его активным элементом является гетероструктура InAs/AlAs 0.16 Sb 0.84 , выращиваемая с по-мощью МЛЭ, в ходе которой удается получать области толщиной до одного монослоя.…”
Section: спектроскопияunclassified
“…Lasing emission at 3.8 THz was observed by applying a magnetic field at liquid helium temperature. This is the first report of laser performance in the THz regime for InAs-based structures [16].…”
Section: Low Temperature Growth Of Inas Based Inter-subband Devicesmentioning
confidence: 99%
“…16 Sb 0.84 . By choosing an appropriate composition, it would be possible to grow InAs based THz QCLs with a low conduction band offset and therefore easy to control barrier thicknesses.…”
Section: Introductionmentioning
confidence: 99%
“…Alternative candidates with lower effective electron mass include InGaAs/InAl(Ga)As, 8,9 InGaAs/GaAsSb, 10 and InAs/AlAsSb 11 with compositions lattice matched to InP or InAs, respectively. The latter is very promising due to the lowest effective mass; however only lasing in magnetic fields has been achieved so far.…”
mentioning
confidence: 99%