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

Soumitra Hazra*, Ran Damari, Adina Golombek, Eli Flaxer, Tal Schwartz, Sharly Fleischer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)3000-3005
Number of pages6
JournalACS Omega
Issue number2
StatePublished - 16 Jan 2024


FundersFunder number
Pazi foundation
Wolfson family foundationPR/ec/20419
Israel Science Foundation1856/22, 1435/19, 926/18, 1709/23


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