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Low-loss flake-graphene saturable absorber mirror for laser mode-locking at sub-200-fs pulse duration

Source: Appl. Phys. Lett. 99, 261109 (2012); http://dx.doi.org/10.1063/1.3672418

Published 29 December 2011

KEYWORDS and PACS
Keywords
PACS
  • 42.60.Fc
    Laser beam modulation, tuning, and mode locking
  • 42.79.Bh
    Optical lenses, prisms and mirrors
  • YEAR: 2011
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PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef AIP
B. V. Cunning,1 C. L. Brown,1 and D. Kielpinski2
1Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan QLD 4111, Australia
2Centre for Quantum Dynamics, Griffith University, Nathan QLD 4111, Australia
Saturable absorbers are a key component for mode-locking femtosecond lasers. Polymer films containing graphene flakes have recently been used in transmission as laser mode-lockers but suffer from high nonsaturable loss, limiting their application in low-gain lasers. Here, we present a saturable absorber mirror based on a film of pure graphene flakes. The device is used to mode lock an erbium-doped fiber laser, generating pulses with state-of-the-art, sub-200-fs duration. The laser characteristic indicates that the film exhibits low nonsaturable loss (13% per pass) and large absorption modulation depth (45% of low-power absorption). ©2011 American Institute of Physics
History: Received 4 November 2011; accepted 5 December 2011; published 29 December 2011
Digital Object Identifier: http://dx.doi.org/10.1063/1.3672418

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