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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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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
PubMed
Summary
This summary is machine-generated.

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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.

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Last Updated: May 8, 2026

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Published on: November 21, 2019

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
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  • 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.