期刊
APPLIED PHYSICS LETTERS
卷 99, 期 26, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3672418
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资金
- Australian Research Council [DP0773354]
- School of Biomolecular and Physical Sciences
- Queensland Micro- and Nanotechnology Centre, Griffith University
- Australian Research Council [DP0773354] Funding Source: Australian Research Council
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). (C) 2011 American Institute of Physics. [doi: 10.1063/1.3672418]
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