Broadband ultrafast nonlinear absorption and nonlinear refraction of layered molybdenum dichalcogenide semiconductors

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 中科院强激光材料重点实验室

	Broadband ultrafast nonlinear absorption and nonlinear refraction of layered molybdenum dichalcogenide semiconductors
	Wang, Kangpeng ; Feng, Yanyan ; Chang, Chunxia ; Zhan, Jingxin ; Wang, Chengwei ; Zhao, Quanzhong ; Coleman, Jonathan N.; Zhang, Long ; Blau, Werner J.; Wang, Jun
刊名	nanoscale
	2014
卷号	6 期号:18 页码:10530
关键词	TRANSITION-METAL DICHALCOGENIDES OPTICAL NONLINEARITIES SATURABLE ABSORPTION SINGLE-BEAM MOS2 EXFOLIATION NANOSHEETS GRAPHENE PHOTOLUMINESCENCE MONOLAYER
通讯作者	zhang, l (reprint author), chinese acad sci, shanghai inst opt & fine mech, key lab mat high power laser, shanghai 201800, peoples r china.
英文摘要	a series of layered molybdenum dichalcogenides, i.e., mox2 (x = s, se and te), were prepared in cyclohexyl pyrrolidinone by a liquid-phase exfoliation technique. the high quality of the two-dimensional nanostructures was verified by transmission electron microscopy and absorption spectroscopy. open-and closed-aperture z-scans were employed to study the nonlinear absorption and nonlinear refraction of the mox2 dispersions, respectively. all the three-layered nanostructures exhibit prominent ultrafast saturable absorption (sa) for both femtosecond (fs) and picosecond (ps) laser pulses over a broad wavelength range from the visible to the near infrared. while the dispersions treated with low-speed centrifugation (1500 rpm) have an sa response, and the mos2 and mose2 dispersions after higher speed centrifugation (10 000 rpm) possess two-photon absorption for fs pulses at 1030 nm, which is due to the significant reduction of the average thickness of the nanosheets; hence, the broadening of band gap. in addition, all dispersions show obvious nonlinear self-defocusing for ps pulses at both 1064 nm and 532 nm, resulting from the thermally-induced nonlinear refractive index. the versatile ultrafast nonlinear properties imply a huge potential of the layered mox2 semiconductors in the development of nanophotonic devices, such as mode-lockers, optical limiters, optical switches, etc.
收录类别	SCI
语种	英语
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.siom.ac.cn/handle/181231/13181]
专题	上海光学精密机械研究所_中科院强激光材料重点实验室
作者单位	1.[Wang, Kangpeng 2.Feng, Yanyan 3.Chang, Chunxia 4.Zhan, Jingxin 5.Zhang, Long 6.Blau, Werner J. 7.Wang, Jun] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China 8.[Wang, Kangpeng 9.Coleman, Jonathan N.
推荐引用方式 GB/T 7714	Wang, Kangpeng,Feng, Yanyan,Chang, Chunxia,et al. Broadband ultrafast nonlinear absorption and nonlinear refraction of layered molybdenum dichalcogenide semiconductors[J]. nanoscale,2014,6(18):10530.
APA	Wang, Kangpeng.,Feng, Yanyan.,Chang, Chunxia.,Zhan, Jingxin.,Wang, Chengwei.,...&Wang, Jun.(2014).Broadband ultrafast nonlinear absorption and nonlinear refraction of layered molybdenum dichalcogenide semiconductors.nanoscale,6(18),10530.
MLA	Wang, Kangpeng,et al."Broadband ultrafast nonlinear absorption and nonlinear refraction of layered molybdenum dichalcogenide semiconductors".nanoscale 6.18(2014):10530.