Surface Plasmon Resonance in Gold Films: My Conundrum

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SUMMARY

This discussion centers on understanding surface plasmon resonance (SPR) in gold films, specifically addressing the refractive index of gold, which is clarified to be approximately 1.5-3 across the visible spectrum, contrary to the initial assumption of 5-10. The conversation also touches on the relationship between negative refractive index and surface plasmon resonance, noting that surface plasmon polaritons (SPP) are linked to this phenomenon. For further insight, the book "Plasmonics: Fundamentals and Applications" by Stefan Maier is recommended, particularly chapters 1 and 2.

PREREQUISITES
  • Understanding of surface plasmon resonance (SPR)
  • Familiarity with refractive index concepts
  • Knowledge of surface plasmon polaritons (SPP)
  • Basic grasp of Maxwell's equations
NEXT STEPS
  • Read "Plasmonics: Fundamentals and Applications" by Stefan Maier
  • Study the relationship between negative refractive index and surface plasmon resonance
  • Explore the mathematical foundations of SPP in the context of Maxwell's equations
  • Investigate applications of SPR in optical sensors and imaging
USEFUL FOR

Researchers, physicists, and engineers interested in nanophotonics, optical sensing, and the fundamental principles of surface plasmon resonance in metallic films.

philip041
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I'm trying understand surface plasmon resonance in a gold film, and have decided that gold must have a refractive index of say 5-10ish in optical light. However I'm not sure and I think I might be on the wrong track.

Also does negative refractive index have anything to do with surface plasmon resonance.

Sorry got myself in a mess.
 
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philip041 said:
I'm trying understand surface plasmon resonance in a gold film, and have decided that gold must have a refractive index of say 5-10ish in optical light. However I'm not sure and I think I might be on the wrong track.

Looking in the CRC handbook, it seems it's more like 1.5-3 across the visible spectrum.

Also does negative refractive index have anything to do with surface plasmon resonance.

I don't know enough about SPR to answer that. I always assumed it was a nonlinear-optical-effect thing?
 


I know something about ssp, and negative refractive index has all about plasmons resonance... SPP is a normal mode of a metal-dielectric interface whom is accomplished by a negative refractive index.

SPP is a solution of a MAXWELL's equation.. check boundary condition and normal modes definition (JACKSON chapter 7 and any book of mathematics)..

Good luck
 


For an excellent explanation of surface plasmon polaritons, I refer you to "Plasmonics: Fundamentals and Applications" by Stefan Maier. I found the book really helpful.

Especially Chap 1 and 2. Goes through basics and what plasmons are about.
 

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