Tm-doped fiber laser mode-locked by graphene-polymer composite
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- 18 October 2012
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 20 (22) , 25077-25084
Abstract
We demonstrate mode-locking of a thulium-doped fiber laser operating at 1.94 μm, using a graphene-polymer based saturable absorber. The laser outputs 3.6 ps pulses, with ∼0.4 nJ energy and an amplitude fluctuation ∼0.5%, at 6.46 MHz. This is a simple, low-cost, stable and convenient laser oscillator for applications where eye-safe and low-photon-energy light sources are required, such as sensing and biomedical diagnostics.Keywords
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