Abstract
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 2.0
μm. 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.
© 2020 Chinese Laser Press
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