Controlling hybrid nonlinearities in transparent conducting oxides via two-colour excitation

M. Clerici, N. Kinsey, C. DeVault, J. Kim, E. G. Carnemolla, L. Caspani, A. Shaltout, D. Faccio, V. Shalaev, A. Boltasseva, M. Ferrera

Research output: Contribution to journalArticle

Abstract

Nanophotonics and metamaterials have revolutionized the way we think about optical space (ɛ,μ), enabling us to engineer the refractive index almost at will, to confine light to the smallest of the volumes, and to manipulate optical signals with extremely small footprints and energy requirements. Significant efforts are now devoted to finding suitable materials and strategies for the dynamic control of the optical properties. Transparent conductive oxides exhibit large ultrafast nonlinearities under both interband and intraband excitations. Here we show that combining these two effects in aluminium-doped zinc oxide via a two-colour laser field discloses new material functionalities. Owing to the independence of the two nonlinearities, the ultrafast temporal dynamics of the material permittivity can be designed by acting on the amplitude and delay of the two fields. We demonstrate the potential applications of this novel degree of freedom by dynamically addressing the modulation bandwidth and optical spectral tuning of a probe optical pulse.
LanguageEnglish
Article number15829
Number of pages6
JournalNature Communications
Volume8
DOIs
Publication statusPublished - 9 Jun 2017

Fingerprint

Zinc Oxide
Refractometry
Aluminum
Oxides
Lasers
Color
nonlinearity
color
Light
conduction
energy requirements
dynamic control
oxides
footprints
zinc oxides
engineers
excitation
optical communication
Nanophotonics
degrees of freedom

Keywords

  • materials for optics
  • nonlinear optics
  • oxides
  • nanophotonics
  • metamaterials

Cite this

Clerici, M. ; Kinsey, N. ; DeVault, C. ; Kim, J. ; Carnemolla, E. G. ; Caspani, L. ; Shaltout, A. ; Faccio, D. ; Shalaev, V. ; Boltasseva, A. ; Ferrera, M. / Controlling hybrid nonlinearities in transparent conducting oxides via two-colour excitation. In: Nature Communications. 2017 ; Vol. 8.
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Clerici, M, Kinsey, N, DeVault, C, Kim, J, Carnemolla, EG, Caspani, L, Shaltout, A, Faccio, D, Shalaev, V, Boltasseva, A & Ferrera, M 2017, 'Controlling hybrid nonlinearities in transparent conducting oxides via two-colour excitation' Nature Communications, vol. 8, 15829. https://doi.org/10.1038/ncomms15829

Controlling hybrid nonlinearities in transparent conducting oxides via two-colour excitation. / Clerici, M.; Kinsey, N.; DeVault, C.; Kim, J.; Carnemolla, E. G.; Caspani, L.; Shaltout, A.; Faccio, D.; Shalaev, V.; Boltasseva, A.; Ferrera, M.

In: Nature Communications, Vol. 8, 15829, 09.06.2017.

Research output: Contribution to journalArticle

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AU - Kinsey, N.

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AU - Caspani, L.

AU - Shaltout, A.

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AU - Boltasseva, A.

AU - Ferrera, M.

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