Waveguide-Mode-Enhanced Millimeter-Wave Photomodulators
نویسندگان
چکیده
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, requiring tens kilowatts photoexciting intensity to generate significant modulation. Here we demonstrate that increasing the light-matter interaction millimeter waves using diffractively coupled waveguide modes leads an increase in photomodulation efficiency greater than two orders magnitude, while maintaining switching speed, order $10\phantom{\rule{0.2em}{0ex}}\ensuremath{\mu}\mathrm{s}$, bare wafer.
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ژورنال
عنوان ژورنال: Physical review applied
سال: 2022
ISSN: ['2331-7043', '2331-7019']
DOI: https://doi.org/10.1103/physrevapplied.17.034001