Nonetheless, one main bottleneck at present to promote this field is short of efficient tunable devices to manipulate the terahertz electromagnetic wave. Metasurface is a good structure to manipulate the terahertz electromagnetic wave in a wide frequency range with ultra-thin film. However, it is ...
However, graphene-based terahertz modulators have seldom been studied under simultaneous influence of both the external voltage bias and optical pump excitation. In this study, we investigate the impact of dual excitation behaviour of a graphene–silicon hybrid film where we achieve enhanced modulation ...
This is based on the creation of a voltage controlled reconfigurable phase hologram, which can impart different reflection angles and phases to an incident beam, replacing bulky and fragile rotating mirrors used for terahertz imaging. This can also find applications in other regions of the ...
This work studies the terahertz light propagation through graphene-based reconfigurable metasurfaces where the unit cell dimensions are much smaller than the terahertz wavelength. The proposed devices, which poses deep-subwavelength unit cell and active region dimensions can operate as amplitude and/or ...
Broadband Optical Modulators Based on Graphene Supercapacitors Optical modulators are commonly used in communication and information technology to control intensity, phase, or polarization of light. Electro-optic, elec... EO Polat,C Kocabas - 《Nano Letters》 被引量: 151发表: 2013年 Athermal Broadban...
Broadband graphene terahertz modulators enabled by intraband transitions. Nat. Commun. 3, 780. https://doi.org/10.1038/ncomms1787.Search in Google Scholar [77] L. Ren, Q. Zhang, J. Yao, et al., 2012. Terahertz and infrared spectroscopy of gated large-area graphene. Nano Lett. 12, 3711...
frequencyand infrared, terahertz (THz1electromagneticwavewasnotoriously difi culttogenerate,modulate.anddetect.Recentprogress insourcesanddetectorsareturningthe‘THzgap’intoone ofthemostrapidlygrowingtechnologicalfields【 j.THz researchbecomesaspotlightofscientificinterestdrivenby avastamountofnewapplicationsinthe...
The multi-layer terahertz metasurfaces are designed to achieve polarization-insensitive electromagnetically induced transparency (EIT) effect and its sensing performance based on spoof localized surface plasmons (S-LSPs). The unit cell o... M Chen,X Yang - 《Physical Chemistry Chemical Physics Pccp》...
Controlling the terahertz wave, especially the dynamical and full control of terahertz wavefront, is highly demanded due to the increasing development of practical devices and application systems. Recently considerable efforts have been made to fill the ‘terahertz gap’ with the help of artificial met...
Graphene-based tunable plasmonic Bragg reflector with a broad bandwidth. Optics Letters 39, 271–274 (2014). 55. Miao, Z. et al. Widely tunable terahertz phase modulation with gate-controlled graphene metasurfaces. Physical Review X 5, 1–13 (2015). 56. Li, Z. et al. Graphene plasmonic...