Principle and Applications of the Coupling of Surface Plasmons and Excitons

Abstract

Surface plasmons have been attracting increasing attention and have been studied extensively in recent decades because of their half-light and half-material polarized properties. On the one hand, the tightly confined surface plasmonic mode may reduce the size of integrated optical devices beyond the diffraction limit; on the other hand, it provides an approach toward enhancement of the interactions between light and matter. In recent experiments, researchers have realized promising applications for surface plasmons in quantum information processing, ultra-low-power lasers, and micro-nano processing devices by using plasmonic structures, which have demonstrated their superiority over traditional optics structures. In this paper, we introduce the theoretical principle of surface plasmons and review the research work related to the interactions between plasmons and excitons. Some perspectives with regard to the future development of plasmonic coupling are also outlined.

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“…gold or silver) has opened up new applications for optical sensing/biosensing, biolabelling, optical imaging, new light sources, integrated optical communication and data processing systems. [1][2][3][4][5][6][7] For this goal, contemporary research focuses on the plasmon-PL interactions in plasmonic-nanoemitter coupled systems through manipulation of, e.g., precise inter-component distances, geometric features of the plasmonic component, different inorganic and organic spacer materials and the fabrication techniques. [8][9][10][11][12][13] Modern sensing, display devices and logic gates requires such coupled systems which could undergo a reversible PL intensity change, i.e., switching between an enhanced and a quenched state upon an external stimulus.…”

“…gold or silver) has opened up new applications for optical sensing/biosensing, biolabelling, optical imaging, new light sources, integrated optical communication and data processing systems. 1–7 For this goal, contemporary research focuses on the plasmon–PL interactions in plasmonic–nanoemitter coupled systems through manipulation of, e.g. , precise inter-component distances, geometric features of the plasmonic component, different inorganic and organic spacer materials and the fabrication techniques.…”