Ultra-short pulse generation by a topological insulator based saturable absorber

被引：400

作者：

Zhao, Chujun ^{[1
]}

Zhang, Han ^{[1
]}

Qi, Xiang ^{[2
]}

Chen, Yu ^{[1
]}

Wang, Zhiteng ^{[1
]}

Wen, Shuangchun ^{[1
]}

Tang, Dingyuan ^{[3
]}

机构：

[1] Hunan Univ, Key Lab Micro & Nano Optoelect Devices, Minist Educ, Coll Phys & Microelect Sci, Changsha 410082, Hunan, Peoples R China

[2] Xiangtan Univ, Lab Quantum Engn & Micronano Energy Technol, Fac Mat & Optoelect, Xiangtan 411105, Peoples R China

[3] Jiangsu Normal Univ, Sch Phys & Elect Engn, Xuzhou 221116, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 21期

基金：

中国国家自然科学基金;

关键词：

DOPED FIBER LASER; SINGLE DIRAC CONE; CARBON NANOTUBES; GRAPHENE; SOLITON; TECHNOLOGY; SURFACE; BI2TE3; BI2SE3;

D O I：

10.1063/1.4767919

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Under strong laser radiation, a Dirac material, the topological insulator (TI) Bi2Te3, exhibits an optical transmittance increase as a result of saturable absorption. Based on an open-aperture Z-scan measurement at 1550 nm, we clearly show that the TI, Bi2Te3 under our investigation, is indeed a very-high-modulation-depth (up to 95%) saturable absorber. Furthermore, a TI based saturable absorber device was fabricated and used as a passive mode locker for ultrafast pulse formation at the telecommunication band. This contribution unambiguously shows that apart from its fantastic electronic property, a TI (Bi2Te3) may also possess attractive optoelectronic property for ultrafast photonics. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4767919]

引用

页数：4

共 50 条

[1] Comment on "Ultra-short pulse generation by a topological insulator based saturable absorber" [Appl. Phys. Lett. 101, 211106 (2012)]
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