A scanning microcavity for in-situ control of single-molecule emission

TL;DR

This paper presents a tunable microcavity system that enables in-situ control of single-molecule emission, demonstrating coupling to resonator modes and potential for emission enhancement.

Contribution

It introduces a novel scannable Fabry-Perot microcavity design capable of coupling with single molecules and controlling their emission properties.

Findings

Successful fabrication of a scannable microcavity with a curved micromirror and planar reflector.

Effective coupling of single organic molecules to the cavity modes.

Discussion of cavity parameters for achieving high Purcell factors.

Abstract

We report on the fabrication and characterization of a scannable Fabry-Perot microcavity, consisting of a curved micromirror at the end of an optical fiber and a planar distributed Bragg reflector. Furthermore, we demonstrate the coupling of single organic molecules embedded in a thin film to well-defined resonator modes. We discuss the choice of cavity parameters that will allow sufficiently high Purcell factors for enhancing the zero-phonon transition between the vibrational ground levels of the electronic excited and ground states.