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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 23, 2023
- Source ID
- 10.1038/s41598-023-44751-x
Entities
People
- Anil K. Patnaik
- Charlie Ebbing
- Enam Chowdhury
- John Bulmer
- John Morrison
- Kyle Frische
- Michael L. Dexter
- Stephen J. Hageman
- Thomas J. Bullard
- Timothy J. Haugan
Organizations
- Air Force Office of Scientific Research