HIGH SIGNAL-TO-NOISE RATIO Q-SWITCHING ERBIUM DOPED FIBER LASER PULSE EMISSION UTILIZING SINGLE LAYER TRIVIAL TRANSFER GRAPHENE FILM SATURABLE ABSORBER
DOI:
https://doi.org/10.11113/jt.v78.7478Keywords:
Signal to noise ratio, Q-Switched pulsed laser, single layer graphene film, saturable absorber, erbium-doped fiber laserAbstract
This paper presents the high signal-to-noise ratio (SNR) Q-switched erbium-doped fiber laser pulse emission using a commercial single layer graphene (SLG) film as a saturable absorber (SA). A sandwiched-type structure with transferred single layer SLG film between two fiber ferrules is formed to function as the SA. Q-switched pulse emission with repetition rate from 47.25 kHz to 67.39 kHz and round-trip time per oscillation from 7.42 µs to 10.36 µs are obtained from the laser cavity set-up. The SNR of 62.64 dB shows a good quality of pulse generation using the SLG film as SA. The effortless production of SLG is enabling factor to produce fast fabrication and low cost SA for application in Q-switched pulsed fiber lasers. Â
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