Directional microwave emission from femtosecond-laser illuminated linear arrays of superconducting rings.

ABSTRACT: We examine the electromagnetic emission from two photo-illuminated linear arrays composed of inductively charged superconducting ring elements. The arrays are illuminated by an ultrafast infrared laser that triggers microwave broadband emission detected in the 1-26 GHz range. Based on constructive interference from the arrays a narrowing of the forward radiation lobe is observed with increasing element count and frequency demonstrating directed GHz emission. Results suggest that higher frequencies and a larger number of elements are achievable leading to a unique pulsed array emitter concept that can span frequencies from the microwave to the terahertz (THz) regime.

SUBMITTER: Bullard TJ 

PROVIDER: S-EPMC10593795 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature