Title: A Dynamically Reconfigurable Terahertz Array Antenna for Near-field Imaging Applications,
Abstract: A proof of concept for high speed near-field imaging with sub-wavelength
resolution using SLM is presented. An 8 channel THz detector array antenna with
an electrode gap of 100 um and length of 5 mm is fabricated using the
commercially available GaAs semiconductor substrate. Each array antenna can be
excited simultaneously by spatially reconfiguring the optical probe beam and
the THz electric field can be recorded using 8 channel lock-in amplifiers. By
scanning the probe beam along the length of the array antenna, a 2D image can
be obtained with amplitude, phase and frequency information.