Proposal for Electrically Tunable Quantum-Cascade Laser

We propose to incorporate in each stage of a quantum-cascade laser a charge accumulation region located outside of the optically active quantum wells. A specially designed intersubband polarization transition in the accumulation region allows electrical control over the modal refractive index, thus...

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Bibliographic Details
Published in:IEEE photonics technology letters 2007-03, Vol.19 (6), p.426-428
Main Authors: Kisin, M.V., Suchalkin, S., Belenky, G.
Format: Article
Language:English
Subjects:
Electric charge
Laser transitions
Laser tuning
Lasers
Optical activity
Optical polarization
Optical refraction
Optical variables control
Proposals
Quantum cascade lasers
Quantum well lasers
Quantum wells
quantum-cascade lasers (QCLs)
quantum-well (QW) lasers
Refractive index
Refractivity
Semiconductor lasers
Tunable circuits and devices
Wavelengths
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Description
Summary:We propose to incorporate in each stage of a quantum-cascade laser a charge accumulation region located outside of the optically active quantum wells. A specially designed intersubband polarization transition in the accumulation region allows electrical control over the modal refractive index, thus providing a mechanism for fast single-mode wavelength tunability
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2007.892904