Flat Ultrathin Metasurface Parabolic Reflector for THz Applications

Technical Report · Tue Feb 05 04:00:00 EST 2019

DOI:https://doi.org/10.2172/1493535· OSTI ID:1493535

Azad, Abul Kalam ^[1]; Kramadhati, Shobhita ^[1]; Silva, Sinhara Rishi Malinda ^[1]; Sirica, Nicholas Steven ^[1]; Chen, Houtong ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

The efficient use of terahertz (THz) radiation promises to foster many practical applications including nondestructive spectroscopy, imaging, high-speed communication, biological and chemical sensing. In contrast to the neighboring bands, THz technology is relatively underdeveloped due to the lack of efficient and compact components/devices in this frequency regime. Natural materials has only limited responses at terahertz frequencies, therefore, artificial materials such as metamaterials have been explored for realizing terahertz devices. Metasurfaces are two-dimensional analogue of metamaterials, which enable unconventional control of scattering phase at the material interface by tuning the size and shape of subwavelength resonators. A full 2π phase shift from these artificial materials makes it possible to shape the wavefront of the outgoing light to realize anomalous reflection/refraction, flat lens, quarter wave plate, and other applications.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program
• DOE Contract Number: 89233218CNA000001
• OSTI ID: 1493535
• Report Number(s): LA-UR--19-20932
• Country of Publication: United States
• Language: English

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