Large-aperture THz emitter with interdigitated electrodes

We fabricated a large-aperture microstructured THz antenna array composed of seven units of 1-cm/sup 2/ photoconductive antennas having interdigitated electrodes with 10-/spl mu/m lines and spaces on a semi-insulating GaAs substrate. By illuminating it with amplified femtosecond optical pulses, a la...

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Bibliographic Details
Main Authors: Hattori, T., Egawa, K., Sakamoto, M., Ookuma, S., Rungsawang, R., Itatani, T.
Format: Conference Proceeding
Language:English
Subjects:
Antenna arrays
Broadband antennas
Electrodes
Gallium arsenide
Laser excitation
Optical pulses
Photoconductivity
Pulse amplifiers
Space technology
Surface emitting lasers
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Summary:We fabricated a large-aperture microstructured THz antenna array composed of seven units of 1-cm/sup 2/ photoconductive antennas having interdigitated electrodes with 10-/spl mu/m lines and spaces on a semi-insulating GaAs substrate. By illuminating it with amplified femtosecond optical pulses, a large THz field comparable to that from conventional large-aperture emitters was obtained at a bias voltage as low as 30 V.
ISSN:2162-2027
DOI:10.1109/ICIMW.2005.1572610