1.
ACS Omega
; 9(2): 3000-3005, 2024 Jan 16.
Artículo
en Inglés
| MEDLINE
| ID: mdl-38250390
RESUMEN
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 â 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.