Photoconductive antenna, terahertz wave generating device, camera, imaging device, and measuring device
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United States of America Patent
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Sep 8, 2015
Grant Date -
Jan 15, 2015
app pub date -
Oct 2, 2014
filing date -
Jan 18, 2012
priority date (Note) -
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Abstract
A photoconductive antenna includes a semiconductor layer, and first and second electrodes. The semiconductor layer includes a first conductive region and a second conductive region constituting portions of a surface of the semiconductor layer disposed on a side to which the pulsed light is irradiated, and a third conductive region disposed between the first and second conductive regions. The first conductive region contains a first conductive type impurity and the second conductive region contains a second conductive type impurity. The third conductive region has a carrier density lower than a carrier density of the first conductive region or a carrier density of the second conductive region. The first electrode and the second electrode are disposed on the side to which the pulsed light is irradiated. The third conductive region is configured and arranged to be irradiated by the pulsed light.
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