Enhanced Transmission at the Zeroth-Order Mode of a Terahertz Fabry-Perot Cavity.

ABSTRACT: A planar Fabry-Perot cavity with intermirror spacing of d ≪ λ is explored for its "zero-order mode" terahertz transmission. The enhanced transmission observed as d → 0 indicates that such cavities satisfy the resonance conditions across a broad terahertz bandwidth. The experimental signatures from this elusive, "technically challenging" regime are evidenced using time-domain terahertz spectroscopy and are complemented by numerical calculations. The results raise intriguing possibilities for terahertz field modulation and pave new paths for strong coupling of multiple transition frequencies simultaneously.

SUBMITTER: Hazra S 

PROVIDER: S-EPMC10795109 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature