Photonic-crystal-based broadband graphene saturable absorber

被引：13
|
作者：
Zhang, Saifeng [1 ]
Shen, Caoran [1 ]
Kislyakov, Ivan M. [1 ]
Dong, Ningning [1 ]
Ryzhov, Anton [2 ]
Zhang, Xiaoyan [1 ]
Belousova, Inna M. [2 ]
Nunzi, Jean-Michel [1 ,3 ,4 ]
Wang, Jun [1 ,5 ,6 ,7 ]
机构：
[1] Chinese Acad Sci, Lab Micronano Optoelect Mat & Devices, Key Lab Mat High Power Laser, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[2] SI Vavilov State Opt Inst, Inst Laser Phys, St Petersburg 199053, Russia
[3] Queens Univ, Dept Phys Engn Phys & Astron, Kingston, ON K7L 3N6, Canada
[4] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada
[5] Chinese Acad Sci, State Key Lab High Field Laser Phys, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[6] CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China
[7] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
来源：
OPTICS LETTERS | 2019年 / 44卷 / 19期
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
ABSORPTION; PERFORMANCE; FIBER;
D O I：
10.1364/OL.44.004785
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The enhanced saturable absorption (SA) of a one-dimensional (1D) photonic crystal (PC) made from polymers and graphene composites by spin coating is observed. It shows obvious bandgaps at two wavelengths in transmittance. Femtosecond Z-scan measurement at 515 nm and 1030 nm reveals a distinct enhancement in the effective nonlinear absorption coefficient beta(eff) for graphene nanoflakes embedded in the PC, when compared with the bulk graphene-polymer composite. The effect is studied in a wide range of laser intensities. Graphene inclusion into a 1D PC remarkably decreases the SA threshold and saturation intensity, providing a desired solution for an advanced all-optical laser mode-locking device. (C) 2019 Optical Society of America.
引用
收藏
页码：4785 / 4788
页数：4
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