L-band femtosecond fiber laser based on a reduced graphene oxide polymer composite saturable absorber

We demonstrate an L-band passively mode-locked erbium-doped fiber laser emitting at 1599.43 nm wavelength at a pulse train of 5.68 MHz. The microfiber reduced graphene oxide composite behaves as a saturable absorber that was fabricated using in-situ wet chemical and dip-coating methods. During operation, a single-pulse soliton was observed at a mode-locking threshold of 40 mW. This is a few times lower than most of the previous assessments in the same class of wavelength band and graphene saturable absorbers. The pulse duration was 568 fs with a maximum average output power of 6.75 mW. In addition, the superiority of this simple fabrication method facilitates its potential of mass production for applications in ultrafast photonics industries.

DOI

10.1364/OME.404238

Citation

NG , E K , LAU , K Y , LEE , H K , Mohd Yusoff , N , SARMANI , A R , OMAR , M F & MAHDI , M A 2021 , ' L-band femtosecond fiber laser based on a reduced graphene oxide polymer composite saturable absorber ' , OPTICAL MATERIALS EXPRESS , vol. 11 , no. 1 , pp. 59-72 . https://doi.org/10.1364/OME.404238

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202101251387

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[article-cris] Sähkötekniikan korkeakoulu / ELEC

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