Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 28, Issue 14, Pages 1529-1532Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2016.2556220
Keywords
Metamaterials; magnetic field enhancement; magnetic plasmons; optical cavity mode; optical strong coupling; Rabi-type splitting
Funding
- State Key Laboratory of Millimeter Waves [K201412]
- Natural Science Foundation of Zhejiang Province [LY14A040004]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20133223120006, 20123223120003]
- National Natural Science Foundation of China [11304159, 11104136, 11464019, 61372045]
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The authors theoretically present a powerful method to enhance and modify the magnetic resonances in metamaterials by strongly coupling them to the optical modes of Fabry-PErot (FP) cavities. Strong coupling between magnetic plasmons (MPs) and optical cavity modes is observed, manifested by the large anticrossing of the resonant positions in the reflection spectra. It results in two branches of hybridized MP modes with a Rabi-type splitting as large as 78 meV. The maximal magnetic field intensity achieved in the metamaterials with an FP cavity is enhanced greatly and an enhancement factor > 3 is observed compared with that achieved by the bare metamaterials (without thin metallic mirror). This has the potential applications in the magnetic nonlinearity and magnetic sensors.
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