Multilayered graphene efficiently formed by mechanical exfoliation for nonlinear saturable absorbers in fiber mode-locked lasers

被引：162

作者：

Chang, You Min ^{[1
]}

Kim, Hyungseok ^{[2
]}

Lee, Ju Han ^{[1
]}

Song, Yong-Won ^{[2
]}

机构：

[1] Univ Seoul, Sch Elect & Comp Engn, Seoul 130743, South Korea

[2] Korea Inst Sci & Technol, Optoelect Mat Ctr, Seoul 136791, South Korea

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 21期

关键词：

LAYER GRAPHENE; SPECTROSCOPY; FILMS;

D O I：

10.1063/1.3521257

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An efficiently prepared graphene from a bulk graphite using mechanical exfoliation is experimentally investigated for the first practical application to ultrafast photonics. Overcoming the limitations of the method in its size and atomic layer control, the multilayered graphene guarantees a nonlinear intensity modulation. After confirming its excellent crystal quality and few-layered nanostructure employing Raman analysis and atomic force microscopy the graphene layer is introduced into a fiber laser as an intracavity saturable absorber to realize the passive mode-locking that produces picosecond pulses at the repetition rate of 10.9 MHz. Extinction ratio of the resultant pulsed output is higher than 40 dB. (C) 2010 American Institute of Physics. [doi:10.1063/1.3521257]

引用

页数：3

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