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Proceedings Paper

Room-temperature fast amplitude modulator of mid-IR free-space laser beams (Conference Presentation)
Author(s): Stefano Pirotta; Ngoc-Linh Tran; Giorgio Biasiol; Paul Crozat; Jean-Michel Manceau; Adel Bousseksou; Raffaele Colombelli

Paper Abstract

We demonstrate a free-space amplitude modulator for mid-IR radiation ( λ around 10 µm) that can operate up at least 400 MHz (-3dB cut-off at ∼100/150 MHz) and at room-temperature. The device is based on a semiconductor hetero-structure enclosed in a judiciously designed optical resonator based on a metallic meta-surface. At zero bias, it operates in the strong light-matter coupling regime up to 300K. By applying an appropriate bias, the device transitions to the weak coupling regime: the important change in reflectivity due to the disappearance of the polaritonic states is exploited to modulate the intensity of a mid-IR laser source up to at least 400 MHz .

Paper Details

Date Published: 10 March 2020
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Proc. SPIE 11290, High Contrast Metastructures IX, 1129016 (10 March 2020); doi: 10.1117/12.2546303
Show Author Affiliations
Stefano Pirotta, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris Sud (France)
CNRS (France)
Ngoc-Linh Tran, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris Sud (France)
CNRS (France)
Giorgio Biasiol, Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche (Italy)
Paul Crozat, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris Sud (France)
CNRS (France)
Jean-Michel Manceau, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris Sud (France)
CNRS (France)
Adel Bousseksou, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris Sud (France)
CNRS (France)
Raffaele Colombelli, Ctr. de Nanosciences et de Nanotechnologies (France)
Univ. Paris Sud (France)
CNRS (France)


Published in SPIE Proceedings Vol. 11290:
High Contrast Metastructures IX
Connie J. Chang-Hasnain; Andrei Faraon; Weimin Zhou, Editor(s)

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