Ultrafast modulation of the spectral filtering properties of a THz metasurface
Abstract
We demonstrate ultrafast tuning of a plasmonic spectral filter at terahertz (THz) frequencies. The device is made of periodically spaced gold crosses deposited on the surface of an undoped silicon wafer in which transient free carriers can be optically injected with a femtosecond resonant pulse. We demonstrate the concept by measuring the transmission spectrum of a notch filter using time-domain THz spectroscopy. Proper synchronization of the...
Paper Details
Title
Ultrafast modulation of the spectral filtering properties of a THz metasurface
Published Date
Jun 24, 2020
Journal
Volume
28
Issue
14
Pages
20296 - 20296
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