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We present simulations and measurements which verify the improved continuous wave THz output power of folded dipole antennas compared to full wavelength dipole antennas.
We present a systematic study of annealed ohmic contacts and their effect on the performance of THz antennas. Annealing of the ohmic contact causes a strong decrease in the contact resistance and an enhancement of the electric field distribution inside the antenna structure. This doubles the output power of the devices compared to conventional photoconductors with standard Schottky-type metallization...
We present an all room-temperature cw THz spectrometer based on robust and low-cost dipole antennas without fragile interdigitated structures. Very accurate spectroscopic measurements and THz image with signal to noise ratio in amplitude exceeding 20 dB are presented. The overall cost, stability and speed of the presented system is superior to the one of the standard THz pulsed spectrometer based...
We present a new cost-effective two-colour Nd: LaSc3(BO3)4 microchip laser for photomixing in a low temperature grown (LT) GaAsSb antennas. The generated 700 GHz radiation is detected with a bolometer.
We drive photoconductive dipole antennas with pulsed and continuous wave excitation. The source resistance in these two cases is dramatically different which causes a significant shift in the radiation pattern of the antenna. Measurements are in a good agreement with simulation results.
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