Please use this identifier to cite or link to this item:
Title: Large-area highly crystalline WSe2 atomic layers for ultrafast pulsed lasers
Authors: Yin, JD
Li, JR
Chen, H
Wang, JT
Yan, PG
Liu, ML
Liu, WJ
Lu, W 
Xu, ZH
Zhang, WF
Wang, JZ
Sun, ZP
Ruan, SC
Issue Date: 2017
Publisher: Optical Society of America
Source: Optics express, 27 Nov. 2017, v. 25, no. 24, p. 30020-30031 How to cite?
Journal: Optics express 
Abstract: Large-area and highly crystalline transition metal dichalcogenides (TMDs) films possess superior saturable absorption compared to the TMDs nanosheet counterparts, which make them more suitable as excellent saturable absorbers (SA) for ultrafast laser technology. Thus far, the nonlinear optical properties of large-scale WSe2 and its applications in ultrafast photonics have not yet been fully investigated. In this work, the saturable absorption of chemical vapor deposition (CVD) grown WSe2 films with large-scale and high quality are studied and the use of WSe2 films as a broadband SA for passively mode-locked fiber lasers at both 1.5 and 2 mu m ranges is demonstrated. To enhance the light-material interaction, largearea WSe2 film is tightly transferred onto the side wall of a microfiber to form a hybrid structure, which realizes strong evanescent wave interaction between light and WSe2 film. The integrated microfiber-WSe2 device shows a large modulation depth of 54.5%. Using the large-area WSe2 as a mode-locker, stable soliton mode-locked pulse generation is achieved and the pulse durations of 477 fs (at 1.5 mu m) and 1.18 ps (at 2.0 mu m) are demonstrated, which suggests that the large-area and highly crystalline WSe2 films afford an excellent broadband SA for ultrafast photonic applications.
EISSN: 1094-4087
DOI: 10.1364/OE.25.030020
Rights: © 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (
© 2017 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
Journal © 2017
The following publication Yin, J. D., Li, J. R., Chen, H., Wang, J. T., Yan, P. G., Liu, M. L., … & Ruan, S. C. (2017). Large-area highly crystalline WSe2 atomic layers for ultrafast pulsed lasers. Optics Express, 25(24), 30020-30031 is available at
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Yin_Large-area_Crystalline_WSe2.pdf3.43 MBAdobe PDFView/Open
View full-text via PolyU eLinks SFX Query
Show full item record
PIRA download icon_1.1View/Download Contents


Citations as of Mar 28, 2019


Last Week
Last month
Citations as of Apr 4, 2019

Page view(s)

Citations as of Apr 16, 2019


Citations as of Apr 16, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.