Transverse single-mode edge-emitting lasers based on coupled waveguides

We report on the transverse single-mode emission from InGaAs/GaAs quantum well edge-emitting lasers with broadened waveguide. The lasers are based on coupled large optical cavity (CLOC) structures where high-order vertical modes of the broad active waveguide are suppressed due to their resonant tunn...

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Bibliographic Details
Published in:Optics letters 2015-05, Vol.40 (9), p.2150-2152
Main Authors: Gordeev, Nikita Yu, Payusov, Alexey S, Shernyakov, Yuri M, Mintairov, Sergey A, Kalyuzhnyy, Nikolay A, Kulagina, Marina M, Maximov, Mikhail V
Format: Article
Language:English
Subjects:
Divergence
Emission
Gallium arsenide
Holes
Lasers
Optical Phenomena
Quantum wells
Resonant tunneling
Waveguides
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Summary:We report on the transverse single-mode emission from InGaAs/GaAs quantum well edge-emitting lasers with broadened waveguide. The lasers are based on coupled large optical cavity (CLOC) structures where high-order vertical modes of the broad active waveguide are suppressed due to their resonant tunneling into a coupled single-mode passive waveguide. The CLOC lasers have shown stable Gaussian-shaped vertical far-field profiles with a reduced divergence of ∼22° FWHM (full width at half-maximum) in CW (continuous-wave) operation.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.40.002150