Alloying in two-dimension has been a hot spot in the development of new,versatile systems of optics and electronics.Alloys have been demonstrated to be a fascinating strategy to modulate the chemical and electronic pr...Alloying in two-dimension has been a hot spot in the development of new,versatile systems of optics and electronics.Alloys have been demonstrated to be a fascinating strategy to modulate the chemical and electronic properties of two-dimensional nanosheets.We firstly reported ultra-broadband enhanced nonlinear saturable absorption of Mo0.53W0.47Te2 alloy at 0.6,1.0,and 2.0μm.The nonlinear saturable absorption of Mo0.53W0.47Te2 saturable absorber(SA)was measured by the open aperture Z-scan technique.Compared to MoTe2 and WTe2 SAs,the Mo0.53W0.47Te2 SA showed five times deeper modulation depth,8.6%lower saturable intensity,and one order larger figure of merit.Thus,our research provides a method of alloys to find novel materials with more outstanding properties for optics and optoelectronic applications.展开更多
Due to the composition-dependent properties of two-dimensional(2D)transition metal dichalcogenides(TMDs),alloying of existing dissimilar TMDs architecture is a novel and controllable route to tailor crystal structures...Due to the composition-dependent properties of two-dimensional(2D)transition metal dichalcogenides(TMDs),alloying of existing dissimilar TMDs architecture is a novel and controllable route to tailor crystal structures with superior optical and optoelectronic properties.Here,we reported the hexagonal-phase WSe1.4Te0.6 alloy can enable great promise for enhanced saturable absorption response exceeding the parent component WSe2 and WTe2,with larger modulation depth and lower saturable intensity.These advantages allowed the 1064 nm passively Q-switched lasers based on WSe1.4Te0.6 to be more efficient,with pulse duration narrowed to 45%,and slope efficiency increased by 232%.Our findings highlighted the appropriate alloying of TMDs as an effective strategy for development of saturable absorbers.展开更多
基金supported by the National Key R&D Program of China(No.2017YFA0303700)the National Natural Science Foundation of China(Nos.11774161,51890861,and 11674169)Key Research Program of Jiangsu Province(No.BE2015003-2).
文摘Alloying in two-dimension has been a hot spot in the development of new,versatile systems of optics and electronics.Alloys have been demonstrated to be a fascinating strategy to modulate the chemical and electronic properties of two-dimensional nanosheets.We firstly reported ultra-broadband enhanced nonlinear saturable absorption of Mo0.53W0.47Te2 alloy at 0.6,1.0,and 2.0μm.The nonlinear saturable absorption of Mo0.53W0.47Te2 saturable absorber(SA)was measured by the open aperture Z-scan technique.Compared to MoTe2 and WTe2 SAs,the Mo0.53W0.47Te2 SA showed five times deeper modulation depth,8.6%lower saturable intensity,and one order larger figure of merit.Thus,our research provides a method of alloys to find novel materials with more outstanding properties for optics and optoelectronic applications.
基金supported by the National Key R&D Program of China(No.2017YFA0303700)the National Natural Science Foundation of China(Nos.11774161,51890861,and 11674169)the Key Research Program of Jiangsu Province(No.BE2015003-2)
文摘Due to the composition-dependent properties of two-dimensional(2D)transition metal dichalcogenides(TMDs),alloying of existing dissimilar TMDs architecture is a novel and controllable route to tailor crystal structures with superior optical and optoelectronic properties.Here,we reported the hexagonal-phase WSe1.4Te0.6 alloy can enable great promise for enhanced saturable absorption response exceeding the parent component WSe2 and WTe2,with larger modulation depth and lower saturable intensity.These advantages allowed the 1064 nm passively Q-switched lasers based on WSe1.4Te0.6 to be more efficient,with pulse duration narrowed to 45%,and slope efficiency increased by 232%.Our findings highlighted the appropriate alloying of TMDs as an effective strategy for development of saturable absorbers.
