Abstract-Comparison of Terahertz, Microwave, and Laser Power Beaming Under Clear and Adverse Weather Conditions

Lou Rizzo, John F. Federici, Samuel Gatley, Ian Gatley, James L. Zunino,  Kate J. Duncan

https://link.springer.com/article/10.1007/s10762-020-00719-w

Wireless transmission of power from point to point has been developed in two predominate electromagnetic frequency ranges: near-infrared and microwave. In this paper, the prospect of wireless power beaming in the terahertz frequency range is explored with emphasis on the role of adverse weather. Link distance, power transmission, and safety performance of near-infrared, microwave, and terahertz power beaming are compared under clear and adverse weather conditions. While infrared power beaming provides the longest link distances of the three under clear weather conditions, terahertz power beaming can provide better performance under adverse weather conditions.

Abstract-Terahertz Van Atta Retroreflecting Arrays

Dhruvkumar Desai, Ian Gatley, Christopher Bolton, Lou Rizzo, Samuel Gatley,  John F. Federici

https://link.springer.com/article/10.1007/s10762-020-00721-2

As an initial step in developing steerable mirrors for terahertz (THz) wireless communication systems, this paper describes the development of a passive planar terahertz retroreflectors based on the Van Atta array. The retroreflector is optimized and simulated using finite-element modeling (FEM) software, fabricated via a low-cost additive manufacturing method, and characterized using THz time-domain spectroscopy. Comparison to a flat metal plate shows a significant increase in retroreflectivity for off-normal angles of incidence.