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Nonlinear Response and Strong Coupling of Surface Phonon Polaritons

  • Nikolai PasslerEmail author
  • Ilya Razdolski
  • Sandy Gewinner
  • Wieland Schöllkopf
  • Simone De Liberato
  • Christopher Gubbin
  • Joshua Caldwell
  • Martin Wolf
  • Alexander Paarmann
Conference paper
Part of the NATO Science for Peace and Security Series B: Physics and Biophysics book series (NAPSB)

Abstract

Analogous to surface plasmon polaritons in metals, polar dielectrics support surface phonon polaritons (SPhP) in the mid infrared (MIR) spectral region. In contrast to their plasmonic counterpart, however, SPhPs exhibit much longer lifetimes, and hence constitute a promising alternative in the development of nanophotonics. Employing an MIR free-electron laser, we here experimentally reveal resonant second harmonic generation from SPhPs, excited in the Otto geometry for prism coupling. In a second system featuring an ultrathin layer on top of the SPhP active material, we observe strong coupling of the bulk SPhP to the epsilon near zero mode supported by the thin layer. Our experimental findings are corroborated using a specifically developed matrix formalism for anisotropic multilayer wave propagation.

Keywords

Strong coupling Surface phonon polariton Epsilon near zero mode Second harmonic generation 

References

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  • Nikolai Passler
    • 1
    Email author
  • Ilya Razdolski
    • 1
  • Sandy Gewinner
    • 1
  • Wieland Schöllkopf
    • 1
  • Simone De Liberato
    • 2
  • Christopher Gubbin
    • 2
  • Joshua Caldwell
    • 3
  • Martin Wolf
    • 1
  • Alexander Paarmann
    • 1
  1. 1.Fritz-Haber-InstituteBerlinGermany
  2. 2.University of SouthamptonSouthamptonUK
  3. 3.Vanderbilt UniversityNashvilleUSA

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