Low saturation fluence antiresonant quantum dot SESAMs for MIXSEL integration | Zendy

Aude-Reine Bellancourt | Zendy; Y. Barbarin | Zendy; D. J. H. C. Maas | Zendy; Mohammad Hossein Shafiei | Zendy; Martin Hoffmann | Zendy; M. Golling | Zendy; Thomas Südmeyer | Zendy; U. Keller | Zendy

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Low saturation fluence antiresonant quantum dot SESAMs for MIXSEL integration

Author(s) -

Aude-Reine Bellancourt,

Y. Barbarin,

D. J. H. C. Maas,

Mohammad Hossein Shafiei,

Martin Hoffmann,

M. Golling,

Thomas Südmeyer,

U. Keller

Publication year - 2009

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.17.009704

Subject(s) - materials science , optics , fluence , optoelectronics , quantum dot , laser , ultrashort pulse , wafer , semiconductor , quantum dot laser , semiconductor laser theory , physics

Quantum dot (QD) semiconductor saturable absorber mirrors (SESAMs) offer a larger design freedom than standard quantum well (QW) SESAMs. QD density, QD growth conditions, number of QD-layers, and post-growth annealing were optimized to independently reduce the saturation fluence and adjust the modulation depth for an antiresonant SESAM that supported for the first time passive modelocking of a vertical external-cavity surface emitting laser (VECSEL) with the same spot size on gain and absorber. The same spot size is a requirement for the modelocked integrated external-cavity surface emitting laser (MIXSEL) concept which enables wafer-scale fabrication of the ultrafast semiconductor laser. The antiresonant SESAM design has low dispersion, is less susceptible to growth errors, and is therefore very promising for short pulse generation and MIXSEL integration.

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