А.N. Zarubin - Leading Technologist, Tomsk State University R.А. Redkin - Electronic Engineer, Tomsk State University S.Yu. Sarkisov - Ph.D. (Phys.-Math.), Research Scientist, Tomsk State University М.S. Skakunov - Leading Technologist, Tomsk State University О.P. Tolbanov - Dr.Sc. (Eng.), Professor, Head of Laboratory, Tomsk State University А.V. Tyazhev - Research Scientist, Tomsk State University. E-mail: redkin@mail.tsu.ru

In the present work the designed photoconductive dipole antennas based on SI-GaAs are described. The influence of geometri- cal shape and antenna length on spectral and amplitude characteristics of the terahertz radiation emitted by the antennas at their ex- citation by femtosecond laser pulses is studied. Three types of antenna design were tested, namely butterfly, bow-tie and stripline. It was found that the stripline antenna with length of 150 µm is the most efficient emitter. It can generate in the frequency range of 0,05-1,5 THz.

 

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