Stable mode-locked fiber laser based on CVD fabricated graphene saturable absorber

被引：173

作者：

Huang, Pi Ling ^{[1
]}

Lin, Shau-Ching ^{[1
]}

Yeh, Chao-Yung ^{[2
]}

Kuo, Hsin-Hui ^{[3
]}

Huang, Shr-Hau ^{[1
]}

Lin, Gong-Ru ^{[4
]}

Li, Lain-Jong ^{[5
]}

Su, Ching-Yuan ^{[5
]}

Cheng, Wood-Hi ^{[1
]}

机构：

[1] Natl Sun Yat Sen Univ, Dept Photon, Kaohsiung 80424, Taiwan

[2] Met Ind Res & Dev Ctr, Kaohsiung, Taiwan

[3] Natl Univ Kaohsiung, Dept Elect Engn, Kaohsiung, Taiwan

[4] Natl Taiwan Univ, Grad Inst Photon & Optoelect, Taipei 10764, Taiwan

[5] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 03期

关键词：

ATOMIC-LAYER GRAPHENE; DEPOSITION; PHOTONICS; GRAPHITE; LOCKING;

D O I：

10.1364/OE.20.002460

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A stable mode-locked fiber laser (MLFL) employing multi-layer graphene as saturable absorber (SA) is presented. The multi-layer graphene were grown by chemical vapor deposition (CVD) on Ni close to A-A stacking. Linear absorbance spectrum of multi-layer graphene was observed without absorption peak from 400 to 2000 nm. Optical nonlinearities of different atomic-layers (7-, 11-, 14-, and 21-layers) graphene based SA are investigated and compared. The results found that the thicker 21-layer graphene based SA exhibited a smaller modulation depth (MD) value of 2.93% due to more available density of states in the band structure of multilayer graphene and favored SA nonlinearity. A stable MLFL of 21-layer graphene based SA showed a pulsewidth of 432.47 fs, a bandwidth of 6.16 nm, and a time-bandwidth product (TBP) of 0.323 at fundamental soliton-like operation. This study demonstrates that the atomic-layer structure of graphene from CVD process may provide a reliable graphene based SA for stable soliton-like pulse formation of the MLFL. (C) 2012 Optical Society of America

引用

页码：2460 / 2465

页数：6

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