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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Magneto-optical spaser.
D G Baranov1, A P Vinogradov, A A Lisyansky
1Moscow Institute of Physics and Technology, Moscow, Russia.
Optics Letters
|August 14, 2013
Summary
We developed a magneto-optical (MO) spaser model. This quantum plasmonic device amplifies circularly polarized surface plasmons, offering potential applications in optical isolators and chiral molecule spectrometry.
Area of Science:
- Quantum Plasmonics
- Nanophotonics
- Electrodynamics
Background:
- Surface plasmons are collective electron oscillations on metal surfaces.
- Spasers are coherent sources of surface plasmons.
- Magneto-optical materials exhibit unique optical properties when subjected to magnetic fields.
Purpose of the Study:
- To present an electrodynamical model of a magneto-optical (MO) spaser.
- To demonstrate the feasibility of using a spherical gain nanoparticle with a metallic MO shell as a spaser.
- To explore potential applications of the MO spaser.
Main Methods:
- Development of an electrodynamical model for the MO spaser.
- Theoretical analysis of surface plasmon amplification in the MO shell.
- Simulation of the device's optical properties.
Main Results:
- A spherical gain nanoparticle coated with a metallic MO shell can function as a spaser.
- The MO spaser amplifies circularly polarized surface plasmons.
- The model confirms the spasing action of the proposed device.
Conclusions:
- The magneto-optical spaser is a viable quantum plasmonic device.
- Potential applications include optical isolators in plasmonic circuits and spaser spectrometry for chiral molecules.
