期刊
IEEE PHOTONICS JOURNAL
卷 4, 期 6, 页码 2205-2213出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOT.2012.2228478
关键词
Graphene oxide; saturable absorber (SA); Q-switching; erbium-doped fiber laser (EDFL)
资金
- MOHE [UM.C/HIR/MOHE/SC/01]
A Q-switched erbium-doped fiber laser (EDFL) incorporating a graphene-oxide-based saturable absorber (SA) is proposed and demonstrated. The SA is fabricated by first dissolving graphene oxide nanopowder in water and subsequently using the thermophoresis effect to deposit it onto the fiber ferrule. The SA is integrated into a ring cavity EDFL, which uses a 3-m-long MetroGain Type-12 erbium-doped fiber (EDF) as the gain medium. The EDFL has a continuous-wave (CW) lasing threshold at a pump power of similar to 9 mW, with Q-switching behavior observed at pump powers similar to 18 mW and above. At the maximum pump power of similar to 100 mW, the Q-switched pulses generated by the EDFL have a repetition rate and pulsewidth of 61 kHz and 6.6 mu s, respectively, along with an average output power of about 3.7 mW. Additionally, at the maximum power, the energy per pulse and peak power of the generated pulses are 61.3 nJ and 9.3 mW, respectively.
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