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Updated: May 10, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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Loss compensation by spasers in plasmonic systems.

E S Andrianov1, D G Baranov, A A Pukhov

  • 1Moscow Institute of Physics and Technology, Dolgoprudniy 141700, Moscow Region, Russia.

Optics Express
|June 6, 2013
PubMed
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Exact loss compensation in plasmonic systems is achievable using spasers, even below the typical spasing threshold. External field synchronization eliminates the distinction between below and above threshold operation, revealing a new loss compensation threshold.

Area of Science:

  • Physics
  • Optics
  • Materials Science

Background:

  • Plasmonic systems offer unique light-matter interaction properties.
  • Spasers (surface plasmon amplification by stimulated emission of radiation) are nanoscale light sources with potential for loss compensation.
  • Understanding spaser operation dynamics is crucial for advanced photonic applications.

Purpose of the Study:

  • To investigate the possibility of achieving exact loss compensation in plasmonic systems using spasers.
  • To explore the influence of external field synchronization on spaser operation and loss compensation.
  • To identify and characterize new pumping thresholds related to loss compensation.

Main Methods:

  • Theoretical analysis of spaser dynamics under external field synchronization.

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Last Updated: May 10, 2026

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07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
15:06

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

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09:29

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  • Numerical simulations of plasmonic systems incorporating spasers.
  • Investigation of pumping parameters and their effect on loss compensation.

    • Main Results:

    • Exact loss compensation is demonstrated in spaser systems across a broad range of pumping values, both below and above the spasing threshold.
    • External field synchronization causes the spaser operation below and above the spasing threshold to become indistinguishable.
    • A novel pumping threshold, the threshold of loss compensation (smaller than the spasing threshold), is identified, below which compensation is not possible.

    Conclusions:

    • Spasers can achieve exact loss compensation in plasmonic systems, challenging conventional understanding of spasing thresholds.
    • External synchronization is key to unifying spaser operation regimes and enabling loss compensation below the traditional threshold.
    • The newly defined loss compensation threshold is critical for practical implementation of loss-compensated plasmonic devices.