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- W2248825947 abstract "We have developed a continuously tunable, broadband terahertz attenuator with a transmission tuning range greater than 103. Attenuation tuning is achieved electrically, by simply changing the DC voltage applied to a heating wire attached to a bulk silicon wafer, which controls its temperature between room temperature and ∼550 K, with the corresponding free-carrier density adjusted between ∼1011 cm−3 and ∼1017 cm−3. This “hot-silicon”-based terahertz attenuator works most effectively at 450–550 K (corresponding to a DC voltage variation of only ∼7 V) and completely shields terahertz radiation above 550 K in a frequency range of 0.1–2.5 THz. Both intrinsic and doped silicon wafers were tested and demonstrated to work well as a continuously tunable attenuator. All behaviors can be understood quantitatively via the free-carrier Drude model taking into account thermally activated intrinsic carriers." @default.
- W2248825947 created "2016-06-24" @default.
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- W2248825947 date "2015-03-04" @default.
- W2248825947 modified "2023-09-27" @default.
- W2248825947 title "Electrically Tunable Hot-Silicon Terahertz Attenuator" @default.
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