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Gate-tunable negative refraction of mid-infrared polaritons
Hai Hu, Na Chen, Hanchao Teng +11
Negative refraction provides an attractive platform to manipulate mid-infrared and terahertz radiation for molecular sensing and thermal radiation applications. However, its implem…
Probing Electronic States in Monolayer Semiconductors through Static and Transient Third-Harmonic Spectroscopy
Yadong Wang, Fadil Iyikanat, Habib Rostami +10
Electronic states and their dynamics are of critical importance for electronic and optoelectronic applications. Here, we probe various relevant electronic states in monolayer MoS2,…
Chip-integrated van der Waals PN heterojunction photodetector with low dark current and high responsivity
Ruijuan Tian, Xuetao Gan, Chen Li +7
Two-dimensional materials are attractive for constructing high-performance photonic chip-integrated photodetectors because of their remarkable electronic and optical properties and…
Strong Second Harmonic Generation from Bilayer Graphene with Symmetry Breaking by Redox-Governed Charge Doping
Mingwen Zhang, Nannan Han, Jing Wang +5
Missing second-order nonlinearity in centrosymmetric graphene overshadows its intriguing optical attribute. Here, we report redox-governed charge doping could effectively break the…
Doping-driven topological polaritons in graphene/α-MoO3 heterostructures
Hai Hu, Na Chen, Hanchao Teng +15
Controlling the charge carrier density provides an efficient way to trigger phase transitions and modulate the optoelectronic properties in natural materials. This approach could b…