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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
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Photonic Effects for Magnetic Dipole Transitions
Zijun Wang1, Tim Senden1, Andries Meijerink1
1Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University , Princetonplein 1, 3584 CC Utrecht, Netherlands.
The Journal of Physical Chemistry Letters
|November 8, 2017
Summary
This study experimentally confirms that magnetic dipole (MD) transition probabilities in nanocrystals (NCs) depend on the refractive index (n) with an n3 relationship. This finding is crucial for controlling light emission spectra through photonic effects.
Area of Science:
- Materials Science
- Quantum Optics
- Nanotechnology
Background:
- Radiative transition probability is key for optical transitions.
- Nanocrystal-cavity models explain refractive index effects on electric dipole (ED) transitions.
- Experimental data on magnetic dipole (MD) transition dependence on refractive index is limited.
Purpose of the Study:
- To experimentally investigate the influence of refractive index (n) on both ED and MD transition probabilities.
- To validate the predicted n3 dependence for MD transitions.
- To provide insights for controlling spectral distribution via photonic effects.
Main Methods:
- Utilized Europium (Eu3+) and Gadolinium (Gd3+) doped β-NaYF4 nanocrystal (NC) model systems.
- Measured luminescence lifetimes and ED/MD intensity ratios.
- Varied the refractive index (n) of the surrounding photonic environment.
Main Results:
- Provided strong experimental evidence for an n3 dependence of MD transition probabilities.
- Observed distinct ED and MD transitions in Eu3+ doped NCs.
- Confirmed the influence of the refractive index on transition probabilities.
Conclusions:
- The refractive index significantly influences MD transition probabilities with an n3 dependency.
- This research bridges the gap between theory and experiment for MD transitions.
- Findings are vital for manipulating light emission properties in nanomaterials.
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