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6 October 2023 All-dielectric metasurfaces for terahertz generation, detection, and manipulation
Hyunseung Jung, Lucy L. Hale, Jayson Briscoe, Ting Shan Luk, Sadhvikas J. Addamane, Igal Brener, Oleg Mitrofanov
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Proceedings Volume PC12683, Terahertz Emitters, Receivers, and Applications XIV; PC126830G (2023) https://doi.org/10.1117/12.2681515
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States
Abstract
We present new design strategies of dielectric metasurfaces for terahertz generation, detection, and manipulation. Metasurface designs can enhance two-step photon absorption process of low-temperature grown GaAs and can be used to detect terahertz radiation with 60 dB of dynamic range and 4.5 THz of bandwidth using telecom-wavelengths lasers. Moreover, combining InAs metasurfaces and unpatterned films we can realize focused terahertz beam generation using Fresnel zone plate designs without additional terahertz lenses and other optical elements. Our all-dielectric metasurface designs provides an unparalleled opportunity to realize low cost, high performance, and compact terahertz devices.
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Hyunseung Jung, Lucy L. Hale, Jayson Briscoe, Ting Shan Luk, Sadhvikas J. Addamane, Igal Brener, and Oleg Mitrofanov "All-dielectric metasurfaces for terahertz generation, detection, and manipulation", Proc. SPIE PC12683, Terahertz Emitters, Receivers, and Applications XIV, PC126830G (6 October 2023); https://doi.org/10.1117/12.2681515
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KEYWORDS
Design and modelling
Dielectrics
Gallium arsenide
Indium arsenide
Binary data
Terahertz radiation
Terahertz detection
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