Polarization insensitive graphene saturable absorbers using etched fiber for highly stable ultrafast fiber lasers

被引:28
|
作者
Lee, Hyub [1 ]
Kwon, Won Sik [1 ]
Kim, Jin Hwan [1 ]
Kang, Daewon [1 ]
Kim, Soohyun [1 ]
机构
[1] Korea Adv Inst Sci & Technol, Div Mech Engn, Taejon 305701, South Korea
来源
OPTICS EXPRESS | 2015年 / 23卷 / 17期
基金
新加坡国家研究基金会;
关键词
CARBON NANOTUBES; DISPERSION;
D O I
10.1364/OE.23.022116
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this paper, we introduce a graphene-based saturable absorber (GSA) with high damage threshold employing symmetrical evanescent wave interaction for highly stable mode-locking of ultrafast fiber lasers. To enhance the evanescent wave interaction between the graphene layer and the propagating light, graphene flakes are mixed with polydimethylsiloxane (PDMS), and the graphene/PDMS composite is coated onto a chemically etched fiber. The GSA exhibits polarization insensitivity due to its symmetric cross-section, which enables stable operation against environmental disturbance such as stress, bending, and temperature variation. Finally, we demonstrate a fiber laser generating 216 fs pulses with an 80 dB signal-to-noise ratio. (C)2015 Optical Society of America
引用
收藏
页码:22116 / 22122
页数:7
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