4.6 Article

Ultrathin Second-Harmonic Metasurfaces with Record-High Nonlinear Optical Response

Journal

ADVANCED OPTICAL MATERIALS
Volume 4, Issue 5, Pages 664-670

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201500723

Keywords

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Funding

  1. AFOSR Grant [FA9550-14-1-0105]
  2. ONR MURI Grant [N00014-10-1-0942]
  3. excellence cluster Nano Initiative Munich (NIM)

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Ultrathin metasurfaces with record-high nonlinear optical response of 1.2 x 10(6) pm V-1 for second harmonic generation are experimentally demonstrated in the mid-infrared spectral range. A second harmonic power conversion efficiency of 0.075% is achieved in a 400-nm-thick (lambda/25) metasurface at a pump intensity of only 15 kW cm(-2).

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