Bismuth Nanofilms As Efficient Broadband Thz Antireflection Coating

Alexander Stroh,Wentao Zhang,Savio Fabretti,Hassan A Hafez,Laurenz Kremeyer,Jungwoo Koo, Frank Meyer zu Heringdorf,Gunter Reiss,Michael Horn-von Hoegen,Dmitry Turchinovich

2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)（2020）

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摘要

We demonstrate the broadband THz antireflection coating based on bismuth nanofilms. The antireflection effect stems from the complex-valued conductivity of bismuth, providing excellent impedance matching with high-index dielectrics such as silicon, in the range of at least 0 - 4 THz. The details of THz conductivity of bismuth will also be presented.

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关键词

high-index dielectrics,bismuth nanofilms,efficient broadband,antireflection coating,antireflection effect,frequency 0.0 THz to 4.0 THz,Bi,Si

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