Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4868416
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Funding
- AFOSR MURI Grant [FA9550-10-1-0561]
- AFOSR [FA9550-10-1-0064]
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We present a versatile concept for all optical terahertz (THz) amplitude modulators based on a Fabry-Perot semiconductor cavity design. Employing the high reflectivity of two parallel meta-surfaces allows for trapping selected THz photons within the cavity and thus only a weak optical modulation of the semiconductor absorbance is required to significantly damp the field within the cavity. The optical switching yields to modulation depths of more than 90% with insertion efficiencies of 80%. (C) 2014 AIP Publishing LLC.
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