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Updated: May 27, 2026
12:18
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Whispering gallery mode resonators with J-aggregates.
Dzmitry Melnikau1, Diana Savateeva, Andrey Chuvilin
1CIC nanoGune Consolider, Tolosa Hiribidea 76, Donostia-San-Sebastian, 20018, Spain.
Optics Express
|November 24, 2011
Summary
We observed polarization-sensitive light emission from J-aggregate dye molecules coupled to microcavities. This effect, driven by re-absorption, enhances light emission and could improve photonic devices.
Area of Science:
- Photonics
- Materials Science
- Spectroscopy
Background:
- Cyanine dye J-aggregates exhibit unique optical properties.
- Spherical microcavities support whispering gallery modes (WGMs).
- Hybrid systems combine organic dyes with optical resonators.
Purpose of the Study:
- Investigate optical properties of J-aggregate/microcavity hybrid systems.
- Analyze the coupling between J-aggregate emission and microcavity WGMs.
- Explore polarization-dependent phenomena and enhancement strategies.
Main Methods:
- Fabrication of hybrid J-aggregate/microcavity structures.
- Photoluminescence spectroscopy to analyze emission spectra.
- Polarization-resolved measurements to study mode behavior.
- Integration of silver nanoparticles for plasmonic enhancement.
Main Results:
- Observed periodic peaks in photoluminescence due to J-aggregate emission coupled to WGMs.
- Discovered polarization-sensitive mode damping caused by J-aggregate re-absorption.
- Demonstrated suppression of transverse electric (TE) modes and dominance of transverse magnetic (TM) modes in absorption bands.
- Achieved enhanced emission intensity and Raman signals using silver nanoparticles.
Conclusions:
- The hybrid system exhibits strong coupling between J-aggregates and microcavity WGMs.
- Re-absorption leads to significant polarization-dependent optical effects.
- Combining WGMs with plasmonic nanoparticles enhances light-matter interactions.
- These hybrid microcavities show potential for advanced photonic applications.
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