Mode-locked thulium fiber laser with MoS2. (30th April 2015)

• Record Type: Journal Article
• Authors: Tian, Zhen; Wu, Kan; Kong, Lingchen; Yang, Nan; Wang, Yao; Chen, Rong; Hu, Weisheng; Xu, Jianqiu; Tang, Yulong
• Is Part Of: Laser physics letters. Volume 12:Number 6(2015:Jun.)
• Publication Date: 2015-04-30
• Subjects: thulium-doped fiber laser -- mode-locking -- multilayer MoS2 -- dissipative soliton; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/12/6/065104
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: Liquid-phase exfoliated 2D material multilayer MoS2 is transferred onto a gold mirror and its saturable absorption at the 2 µ m wavelength region is experimentally observed. This transferred MoS2 saturable absorber has a modulation depth of 13.6% and a saturation intensity of 23.1 MW cm −2 . This saturable absorber is integrated into a linear Tm 3+ fiber laser cavity, and stable fundamental-frequency mode-locking operation is realized at 2 µ m with pulse energy of 15.5 nJ, pulse width of ~843 ps, and a repetition rate of 9.67 MHz. The laser spectral width is ~17.3 nm with a center wavelength of 1905 nm. This first presence of mode-locking with multilayer MoS2 sheets in the 2 µ m wavelength region verifies that multilayer MoS2 is a good candidate for broadband mode-locking comparable to graphene, as well as a good mode-locker for achieving high pulse energy.