A metamaterial solid-state terahertz phase modulator
نویسندگان
چکیده
منابع مشابه
A metamaterial solid-state terahertz phase modulator
Over the past two decades, terahertz time-domain spectroscopy1 and quantum-cascade lasers2 have been two of the most important developments in terahertz science and technology. These technologies may contribute to a multitude of terahertz applications that are currently under investigation globally3. However, the devices and components necessary to effectively manipulate terahertz radiation req...
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Tunable modulations of terahertz waves in a graphene/ferroelectric-layer/silicon hybrid structure are demonstrated at low bias voltages. The modulation is due to the creation/elimination of an extra barrier in Si layer in response to the polarization in the ferroelectric Si:HfO2 layer. Considering the good compatibility of HfO2 with the Si-based semiconductor process, the highly tunable charact...
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Dichroic polarizers and waveplates exploiting anisotropic materials have vast applications in displays and numerous optical components such as filters, beamsplitters and isolators. Artificial anisotropic media were recently suggested for the realization of negative refraction, cloaking, hyperlenses, and controlling luminescence. However, extending these applications into the terahertz domain is...
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We present the design, fabrication and characterization of a dual band metamaterial absorber which experimentally shows two distinct absorption peaks of 0.85 at 1.4 THz and 0.94 at 3.0 THz. The dual band absorber consists of a dual band electric-field-coupled (ELC) resonator and a metallic ground plane, separated by an 8μm dielectric spacer. Fine tuning of the two absorption resonances is achie...
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ژورنال
عنوان ژورنال: Nature Photonics
سال: 2009
ISSN: 1749-4885,1749-4893
DOI: 10.1038/nphoton.2009.3