Graphite saturable absorber based on the pencil-sketching method for Q-switching of an erbium fiber laser.
Appl Opt
; 55(2): 303-9, 2016 Jan 10.
Article
em En
| MEDLINE
| ID: mdl-26835766
ABSTRACT
We experimentally demonstrate a practical and simple method for the preparation of a graphite-based, fiberized saturable absorber (SA). Our SA is prepared by using a low-cost graphite-core pencil that is commercially available from stationary stores to uniformly shade the flat end of a fiber ferrule. The saturable-absorption performance of the prepared SA was experimentally tested, and the feasibility of using the SA as a passive Q-switch was investigated through its incorporation into an erbium-doped-fiber ring cavity. The modulation depth of the SA is â¼1%, and the Q-switched pulses of a 1.98 µs temporal width were readily obtained at a repetition rate of 46.08 kHz.
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2016
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Article