On-chip terahertz plasmonic reflector

Conference paper (2024)

Authors

Shima Rajabali ETH Zürich
S. Rajabali ETH Zürich
Josefine Enkner ETH Zürich
E. Cortese University of Southampton
Erika Cortese University of Southampton
Mattias Beck ETH Zürich
S. De Liberato University of Southampton
Simone de Liberato University of Southampton
Simone De Liberato University of Southampton
S. de Liberato University of Southampton
Jérôme Faist ETH Zürich
J. Faist ETH Zürich
Jerome Faist ETH Zürich
G. Scalari ETH Zürich
Giacomo Scalari ETH Zürich
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Published Date

2024

Language

English

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Abstract

Recent research revealed that in resonators with deep subwavelength gaps coupled to two-dimensional electron gases, propagating plasmons lead to energy leakage, hindering polaritonic resonance. This study introduces plasmonic reflectors to create an artificial energy stopband, confining terahertz-range plasmons and recovering polaritonic resonances. Using this approach demonstrates a normalized coupling ratio of 0.36, enabling the observation of polaritonic resonances not seen without plasmonic reflectors.