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Proceedings Paper

All quantum dot based femtosecond VECSEL
Author(s): M. Hoffmann; O. D. Sieber; W. P. Pallmann; V. J. Wittwer; I. L. Krestnikov; S. S. Mikhrin; D. A. Livshits; G. Malcolm; C. Hamilton; Y. Barbarin; T. Südmeyer; U. Keller
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Paper Abstract

Using quantum well gain materials, ultrafast VECSELs have achieved higher output powers (2.1 W) and shorter pulses (60 fs) than any other semiconductor laser. Quantum dot (QD) gain materials offer a larger inhomogeneously broadened bandwidth, potentially supporting shorter pulse durations. We demonstrate the first femtosecond QD-based VECSEL using a QD-SESAM for modelocking, obtaining 63 mW at 3.2 GHz in 780-fs pulses at 960 nm. In continuous wave operation we obtained 5.2 W using an intra-cavity diamond heat spreader, which has been the highest output power from a QD-VECSEL so far. Further power scaling is thus expected also for modelocked operation.

Paper Details

Date Published: 21 February 2011
PDF: 6 pages
Proc. SPIE 7919, Vertical External Cavity Surface Emitting Lasers (VECSELs), 79190X (21 February 2011); doi: 10.1117/12.873731
Show Author Affiliations
M. Hoffmann, ETH Zurich (Switzerland)
O. D. Sieber, ETH Zurich (Switzerland)
W. P. Pallmann, ETH Zurich (Switzerland)
V. J. Wittwer, ETH Zurich (Switzerland)
I. L. Krestnikov, Innolume GmbH (Germany)
S. S. Mikhrin, Innolume GmbH (Germany)
D. A. Livshits, Innolume GmbH (Germany)
G. Malcolm, M Squared Lasers Ltd. (United Kingdom)
C. Hamilton, M Squared Lasers Ltd. (United Kingdom)
Y. Barbarin, ETH Zurich (Switzerland)
T. Südmeyer, ETH Zurich (Switzerland)
U. Keller, ETH Zurich (Switzerland)

Published in SPIE Proceedings Vol. 7919:
Vertical External Cavity Surface Emitting Lasers (VECSELs)
Ursula Keller, Editor(s)

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