Title :
Large-aperture THz emitter with interdigitated electrodes
Author :
Hattori, T. ; Egawa, K. ; Sakamoto, M.S. ; Ookuma, S. ; Rungsawang, R. ; Itatani, T.
Author_Institution :
Inst. of Appl. Phys., Tsukuba Univ., Ibaraki, Japan
Abstract :
We fabricated a large-aperture microstructured THz antenna array composed of seven units of 1-cm2 photoconductive antennas having interdigitated electrodes with 10-μm 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.
Keywords :
III-V semiconductors; aperture antennas; electrodes; gallium arsenide; millimetre wave antenna arrays; photoconducting materials; submillimetre wave antennas; 10 micron; GaAs; femtosecond optical pulses; interdigitated electrodes; large-aperture emitter; photoconductive antennas; submillimetre wave antenna; terahertz antenna array; terahertz emitter; Antenna arrays; Broadband antennas; Electrodes; Gallium arsenide; Laser excitation; Optical pulses; Photoconductivity; Pulse amplifiers; Space technology; Surface emitting lasers;
Conference_Titel :
Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on
Print_ISBN :
0-7803-9348-1
DOI :
10.1109/ICIMW.2005.1572610
