Abstract
Femtosecond mode-locked fiber lasers have been actively employed in many practical applications such as micro-machining, corneal surgery and multi-photon imaging, thanks to their compactness, alignment-free operation, and low cost. To enhance the long-term stability and self-starting operation of mode-locked lasers, saturable absorber (SA) devices, such as semiconductor saturable absorber mirrors (SESAMs), have been employed. Recently, planar waveguide-type SA device based on standard planar lightwave circuit (PLC) wafer fabrication process [1] has been developed and applied to high-repetition-rate all-fiber mode-locked lasers [2].
© 2017 IEEE
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