Ultra-broadband quantum cascade laser, tunable over 760 cm-1, with balanced gain

N. Bandyopadhyay; M. Chen; S. Sengupta; S. Slivken; M. Razeghi

doi:10.1364/OE.23.021159

Ultra-broadband quantum cascade laser, tunable over 760 cm^-1, with balanced gain

N. Bandyopadhyay, M. Chen, S. Sengupta, S. Slivken, M. Razeghi

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

A heterogeneous quantum cascade laser, consisting of multiple stacks of discrete wavelength quantum cascade stages, emitting in 5.9-10.9 μm, wavelength range is reported. The broadband characteristics are demonstrated with a distributed-feedback laser array, emitting at fixed frequencies at room temperature, covering an emission range of ∼760 cm^-1, which is ∼59% relative to the center frequency. By appropriate choice of a strained AlInAs/GaInAs material system, quantum cascade stage design and spatial arrangement of stages, the distributed-feedback array has been engineered to exhibit a flat threshold current density across the demonstrated range.

Original language	English (US)
Pages (from-to)	21159-21164
Number of pages	6
Journal	Optics Express
Volume	23
Issue number	16
DOIs	https://doi.org/10.1364/OE.23.021159
State	Published - Aug 10 2015

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Ultra-broadband quantum cascade laser, tunable over 760 cm-1, with balanced gain",

abstract = "A heterogeneous quantum cascade laser, consisting of multiple stacks of discrete wavelength quantum cascade stages, emitting in 5.9-10.9 μm, wavelength range is reported. The broadband characteristics are demonstrated with a distributed-feedback laser array, emitting at fixed frequencies at room temperature, covering an emission range of ∼760 cm-1, which is ∼59% relative to the center frequency. By appropriate choice of a strained AlInAs/GaInAs material system, quantum cascade stage design and spatial arrangement of stages, the distributed-feedback array has been engineered to exhibit a flat threshold current density across the demonstrated range.",

author = "N. Bandyopadhyay and M. Chen and S. Sengupta and S. Slivken and M. Razeghi",

note = "Funding Information: This work is partially supported by the Department of Homeland Security Science and Technology Directorate (grant HSHQDC-13-C-00034), National Science Foundation (grants ECCS-1231289 and ECCS-1306397), Naval Air Systems Command (grant N68936-13-C-0124), and an Early Stage Innovations grant from NASA''s Space Technology Research Grants Program. The authors would also like to acknowledge the encouragement and support of all the involved program managers. Publisher Copyright: {\textcopyright} 2015 Optical Society of America.",

year = "2015",

month = aug,

day = "10",

doi = "10.1364/OE.23.021159",

language = "English (US)",

volume = "23",

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journal = "Optics Express",

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publisher = "The Optical Society",

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T1 - Ultra-broadband quantum cascade laser, tunable over 760 cm-1, with balanced gain

AU - Bandyopadhyay, N.

AU - Chen, M.

AU - Sengupta, S.

AU - Slivken, S.

AU - Razeghi, M.

N1 - Funding Information: This work is partially supported by the Department of Homeland Security Science and Technology Directorate (grant HSHQDC-13-C-00034), National Science Foundation (grants ECCS-1231289 and ECCS-1306397), Naval Air Systems Command (grant N68936-13-C-0124), and an Early Stage Innovations grant from NASA''s Space Technology Research Grants Program. The authors would also like to acknowledge the encouragement and support of all the involved program managers. Publisher Copyright: © 2015 Optical Society of America.

PY - 2015/8/10

Y1 - 2015/8/10

N2 - A heterogeneous quantum cascade laser, consisting of multiple stacks of discrete wavelength quantum cascade stages, emitting in 5.9-10.9 μm, wavelength range is reported. The broadband characteristics are demonstrated with a distributed-feedback laser array, emitting at fixed frequencies at room temperature, covering an emission range of ∼760 cm-1, which is ∼59% relative to the center frequency. By appropriate choice of a strained AlInAs/GaInAs material system, quantum cascade stage design and spatial arrangement of stages, the distributed-feedback array has been engineered to exhibit a flat threshold current density across the demonstrated range.

AB - A heterogeneous quantum cascade laser, consisting of multiple stacks of discrete wavelength quantum cascade stages, emitting in 5.9-10.9 μm, wavelength range is reported. The broadband characteristics are demonstrated with a distributed-feedback laser array, emitting at fixed frequencies at room temperature, covering an emission range of ∼760 cm-1, which is ∼59% relative to the center frequency. By appropriate choice of a strained AlInAs/GaInAs material system, quantum cascade stage design and spatial arrangement of stages, the distributed-feedback array has been engineered to exhibit a flat threshold current density across the demonstrated range.

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