5 research outputs found
Magnetic Topological Insulator MnBi<sub>2</sub>Te<sub>4</sub> Nanosheets for Femtosecond Pulse Generation
The van der Waals layered material MnBi2Te4, as a magnetic topological insulator, has attracted tremendous
interest
for novel physics research in the fields of condensed matter physics
and materials science. However, the nonlinear optical properties of
MnBi2Te4 and its applications in ultrafast optics
have rarely been explored. In this study, high-quality MnBi2Te4 nanosheets have been successfully synthesized by the
self-flux method. The morphology, chemical composition, magnetic properties,
and nonlinear optical characteristics were systematically investigated.
The magnetic transition of MnBi2Te4 was confirmed
by a low-temperature spatially resolved spectroscopic technique. The
saturable absorption property of MnBi2Te4 was
measured by a balanced twin-detector system with a modulation depth
of 4.5% and a saturation optical intensity of 2.35 GW/cm2. Furthermore, by inserting the MnBi2Te4-based
saturable absorber, a soliton mode-locking laser operating at 1558.8
nm was obtained with a pulse duration of 331 fs. This research will
pave the way for applications of the magnetic TI MnBi2Te4 in nonlinear optics and photonics
Additional file 3 of Statistical modeling of gut microbiota for personalized health status monitoring
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Additional file 4 of Statistical modeling of gut microbiota for personalized health status monitoring
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