Details

Autor(en) / Beteiligte

• Lau, K.Y.
• Muhammad, F.D.
• Latif, A.A.
• Abu Bakar, M.H.
• Yusoff, Z.
• Mahdi, M.A.

Titel

Passively mode-locked soliton femtosecond pulses employing graphene saturable absorber

Ist Teil von

• Optics and laser technology, 2017-09, Vol.94, p.221-227

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •The graphene thin film is employed as the nanomaterial for saturable absorber (SA).•The SA fabrication process is very simple without involving heavy chemicals.•The SA has low saturation intensity that leads to low mode-locking threshold. We demonstrate a passively mode-locked fiber laser incorporating graphene thin film (GTF) as saturable absorber (SA). The SA is fabricated by sandwiching the GTF between two single mode fiber ferrules through a fiber adaptor. The transmission loss at 1560nm and non-linear saturation absorption modulation depth for GTF-SA are 0.8dB and 2.90%, respectively. An erbium-doped fiber laser cavity is constructed to verify the functionality of GTF-SA and is designed to have net anomalous dispersion. It generates large spectral width of 4.99nm with pulse repetition rate of 9.655MHz and pulse width of 670fs. Net anomalous dispersion and time bandwidth product higher than the sech2 transform-limited pulse validate the experimental result. In short, we demonstrate high performance GTF-SA that is able to generate ultrafast pulse duration in femtosecond range effortlessly with simple and green SA fabrication procedures.