Waveguide-Mode-Enhanced Millimeter-Wave Photomodulators
Hooper, IR
Date: 1 March 2022
Article
Journal
Physical Review Applied
Publisher
American Physical Society (APS)
Publisher DOI
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Abstract
The modulation of millimeter-wave transmission through a silicon wafer upon photoexcitation is typically very inefficient for off-the-shelf low effective charge carrier lifetime wafers, typically requiring tens of kilowatts of photoexciting intensity to generate significant modulation. Here we demonstrate that increasing the light-matter ...
The modulation of millimeter-wave transmission through a silicon wafer upon photoexcitation is typically very inefficient for off-the-shelf low effective charge carrier lifetime wafers, typically requiring tens of kilowatts of photoexciting intensity to generate significant modulation. Here we demonstrate that increasing the light-matter interaction for the millimeter waves using diffractively coupled waveguide modes leads to an increase in photomodulation efficiency of greater than two orders of magnitude, while maintaining the switching speed, of the order of
10μs, of the bare wafer.
Physics and Astronomy
Faculty of Environment, Science and Economy
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