Tm-doped fiber laser mode-locked by graphene-polymer composite.
The Optical Society
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Zhang, M., Kelleher, E., Torrisi, F., Sun, Z., Hasan, T., Popa, D., Wang, F., et al. (2012). Tm-doped fiber laser mode-locked by graphene-polymer composite.. Opt Express, 20 (22), 25077-25084. https://doi.org/10.1364/OE.20.025077
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.
Engineering and Physical Sciences Research Council (EP/G030480/1)
Engineering and Physical Sciences Research Council (EP/H00274X/1)
External DOI: https://doi.org/10.1364/OE.20.025077
This record's URL: https://www.repository.cam.ac.uk/handle/1810/279769