TY - JOUR
T1 - Nonlinear Saturable Absorption of Liquid-Exfoliated Molybdenum/Tungsten Ditelluride Nanosheets
AU - Mao, Dong
AU - Du, Bobo
AU - Yang, Dexing
AU - Zhang, Shengli
AU - Wang, Yadong
AU - Zhang, Wending
AU - She, Xiaoyang
AU - Cheng, Huachao
AU - Zeng, Haibo
AU - Zhao, Jianlin
N1 - Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2016/3/16
Y1 - 2016/3/16
N2 - Molybdenum disulfide (MoS2) and tungsten disulfide (WS2), two representative transition metal dichalcogenide materials, have captured tremendous interest for their unique electronic, optical, and chemical properties. Compared with MoS2 and WS2, molybdenum ditelluride (MoTe2) and tungsten ditelluride (WTe2) possess similar lattice structures while having smaller bandgaps (less than 1 eV), which is particularly interesting for applications in the near-infrared wavelength regime. Here, few-layer MoTe2/WTe2 nanosheets are fabricated by a liquid exfoliation method using sodium deoxycholate bile salt as surfactant, and the nonlinear optical properties of the nanosheets are investigated. The results demonstrate that MoTe2/WTe2 nanosheets exhibit nonlinear saturable absorption property at 1.55 μm. Soliton mode-locking operations are realized separately in erbium-doped fiber lasers utilizing two types of MoTe2/WTe2-based saturable absorbers, one of which is prepared by depositing the nanosheets on side polished fibers, while the other is fabricated by mixing the nanosheets with polyvinyl alcohol and then evaporating them on substrates. Numerous applications may benefit from the nonlinear saturable absorption features of MoTe2/WTe2 nanosheets, such as visible/near-infrared pulsed laser, materials processing, optical sensors, and modulators.
AB - Molybdenum disulfide (MoS2) and tungsten disulfide (WS2), two representative transition metal dichalcogenide materials, have captured tremendous interest for their unique electronic, optical, and chemical properties. Compared with MoS2 and WS2, molybdenum ditelluride (MoTe2) and tungsten ditelluride (WTe2) possess similar lattice structures while having smaller bandgaps (less than 1 eV), which is particularly interesting for applications in the near-infrared wavelength regime. Here, few-layer MoTe2/WTe2 nanosheets are fabricated by a liquid exfoliation method using sodium deoxycholate bile salt as surfactant, and the nonlinear optical properties of the nanosheets are investigated. The results demonstrate that MoTe2/WTe2 nanosheets exhibit nonlinear saturable absorption property at 1.55 μm. Soliton mode-locking operations are realized separately in erbium-doped fiber lasers utilizing two types of MoTe2/WTe2-based saturable absorbers, one of which is prepared by depositing the nanosheets on side polished fibers, while the other is fabricated by mixing the nanosheets with polyvinyl alcohol and then evaporating them on substrates. Numerous applications may benefit from the nonlinear saturable absorption features of MoTe2/WTe2 nanosheets, such as visible/near-infrared pulsed laser, materials processing, optical sensors, and modulators.
KW - molybdenum ditelluride
KW - saturable absorption
KW - transition metal dichalcogenides
KW - tungsten ditelluride
KW - ultrafast lasers
UR - http://www.scopus.com/inward/record.url?scp=84955581475&partnerID=8YFLogxK
U2 - 10.1002/smll.201503348
DO - 10.1002/smll.201503348
M3 - 文章
AN - SCOPUS:84955581475
SN - 1613-6810
VL - 12
SP - 1489
EP - 1497
JO - Small
JF - Small
IS - 11
ER -