Abstract

This chapter aims to familiarize readers with general knowledge of passive Qswitched and mode-locked fiber lasers. It emphasizes on carbon-based saturable ab‐ sorbers, namely graphene and carbon nanotubes (CNTs); their unique electronic band structures and optical characteristics. The methods of incorporating these car‐ bon-based saturable absorbers into fiber laser cavity will also be discussed. Lastly, several examples of experiments where carbon-based saturable absorbers were used in generating passive Q-switched and mode-locked fiber lasers are demon‐ strated.

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