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Updated: May 27, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Twenty-fold enhancement of molecular fluorescence by coupling to a J-aggregate critically coupled resonator
Gleb M Akselrod1, Brian J Walker, William A Tisdale
1Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room 13-3146, Cambridge, Massachusetts 02139, USA. akselrod@mit.edu
Abstract:
We report a 20-fold enhancement in the fluorescence of the organic dye DCM when resonantly coupled to a strongly optically absorbing structure of a thin film of spin-deposited molecular J-aggregates in a critically coupled resonator (JCCR) geometry. A submonolayer equivalent of DCM molecules is shown to absorb and re-emit 2.2% of the incident resonant photons when coupled to the JCCR enhancement structure, compared to 0.1% for the bare film of same thickness on quartz. Such a JCCR structure is a general energy focusing platform that localizes over 90% of incident light energy within a 15 nm thin film layer in the form of excitons that can subsequently be transferred to colocated lumophores. Applications of the exciton-mediated concentration of optical energy are discussed in the context of solid-state lighting, photodetection, and single photon optics.
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