A photoconductive antenna (PCA) for terahertz (THz) waves consists of a highly resistive direct semiconductor thin film with two electric contact pads. The film is made in most cases using a III-V compound semiconductor like GaAs. It is epitaxially grown on a semi-insulating GaAs substrate(SI-GaAs), which is also a highly resistive material.
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hardstyle905 1 year ago
sweet!
qwerty86078 1 year ago
j want one :)
DarkTemp0 2 years ago