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Time- and frequency-resolved electrodynamics of germanium nanoantennas for mid-infrared plasmonics (Orale)

Abstract : We investigate the mid-infrared response of heavily doped germanium films and periodic arrays of nanoantennas by both continuous wave transmission/reflection spectroscopy and ultrafast pump-probe spectroscopy. We compare the data to finite-element modeling electromagnetic simulations of the subwavelength nanostructures. The plasma frequency of the doped or optically activated semiconductor extends in the 1000-2000 cm-1 range thus enabling access to molecular fingerprints.
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https://hal-iogs.archives-ouvertes.fr/hal-01713327
Contributor : Fatima Pereira <>
Submitted on : Tuesday, February 20, 2018 - 2:28:43 PM
Last modification on : Saturday, June 20, 2020 - 4:18:05 PM

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Michele Ortolani, Marco Fischer, Leonetta Baldassarre, Antonio Samarelli, Kevin Gallacher, et al.. Time- and frequency-resolved electrodynamics of germanium nanoantennas for mid-infrared plasmonics (Orale). 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Aug 2015, Hong Kong, China. pp.1-2, ⟨10.1109/IRMMW-THz.2015.7327717⟩. ⟨hal-01713327⟩

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