Journal
LASER PHYSICS LETTERS
Volume 12, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1612-2011/12/6/065104
Keywords
thulium-doped fiber laser; mode-locking; multilayer MoS2; dissipative soliton
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Funding
- National Natural Science Foundation of China [61275136, 61138006, 11121504]
- State Key Program for Basic Research of China [2010CB630703]
- Research Fund for the Doctoral Program of Higher Education of China [20120073120085]
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Liquid-phase exfoliated 2D material multilayer MoS2 is transferred onto a gold mirror and its saturable absorption at the 2 mu 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 Tm3+ fiber laser cavity, and stable fundamental-frequency mode-locking operation is realized at 2 mu m with pulse energy of 15.5 nJ, pulse width of similar to 843 ps, and a repetition rate of 9.67 MHz. The laser spectral width is similar to 17.3 nm with a center wavelength of 1905 nm. This first presence of mode-locking with multilayer MoS2 sheets in the 2 mu 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.
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