17 February 2010 High-energy femtosecond fiber laser at 1.6 microns for corneal surgery
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Abstract
We present a compact femtosecond fiber laser at 1.6 μm based on chirped-pulse amplification in an erbiumdoped large-mode-area fiber. In erbium-doped fibers, low gain at 1.6 μm increases the fiber length needed to achieve amplification, which enhances nonlinear phase accumulation. In this work, 12 m of a 20-μm-diameter core highly-doped fiber was used to reduce nonlinearities. Nonlinear compensation of the stretcher/compressor dispersion mismatch results in the generation of 605 fs pulses at 300 kHz with an energy of 1.5 μJ. This is, to our knowledge, the first sub-picosecond laser reaching the μJ level at 1.6 μm in erbium-doped fibers.
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Franck Morin, Franck Morin, Frédéric Druon, Frédéric Druon, Marc Hanna, Marc Hanna, Patrick Georges, Patrick Georges, } "High-energy femtosecond fiber laser at 1.6 microns for corneal surgery", Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75800T (17 February 2010); doi: 10.1117/12.841834; https://doi.org/10.1117/12.841834
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