An arrayed nanoantenna for broadband light emission and detection

TL;DR

This paper introduces a broadband arrayed nanoantenna with nanorods of varying lengths that enables unidirectional light emission and detection, promising advances in quantum communication and improved photoactive device performance.

Contribution

It proposes a novel broadband nanoantenna design with unidirectional emission and reception capabilities for enhanced light manipulation and device applications.

Findings

Achieves broadband unidirectional emission and reception.

Potential applications in quantum communication and solar energy devices.

Enhances performance of photoactive devices.

Abstract

We suggest a broadband optical unidirectional arrayed nanoantenna consisting of equally spaced nanorods of gradually varying length. Each nanorod can be driven by near-field quantum emitters radiating at different frequencies or, according to the reciprocity principle, by an incident light at the same frequency. Broadband unidirectional emission and reception characteristics of the nano-antenna open up novel opportunities for subwavelength light manipulation and quantum communication, as well as for enhancing the performance of photoactive devices such as photovoltaic detectors, light-emitting diodes, and solar cells.