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Mid-Infrared Third-Harmonic Emission from Heavily-Doped Germanium Plasmonic Nanoantennas

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Abstract

We investigate the nonlinear optical properties of single resonant plasmonic antennas fabricated from heavily-doped Germanium films. Excitation with intense and ultrashort mid-infrared pulses at 10.8 µm wavelength produces emission at 3.7 µm via third-harmonic generation.

© 2017 Optical Society of America

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