Title :
Generation of high-peak-power THz radiation by using diamond photoconductive antenna array
Author :
Yoneda, Hitoki ; Tokuyama, Kazutatsu ; Nagata, Hiroaki ; Ohta, Satoru ; Nakamura, Ryusuke ; Ueda, Ken-ichi ; Yamamoto, Hironori ; Baba, Ken-ichi
Author_Institution :
Inst. for Laser Sci., Univ. of Electro-communications, Tokyo, Japan
Abstract :
A photoconductive switch arrayed antenna with a CVD diamond film was developed for generating high-power THz wave. In this device, an electric field stress of 2×106 V/cm can be applied to the photoconductive gaps. This level can alleviate the present problem of saturation in THz emission using a photoconductive antenna. In an experiment using an ultra-short pulse Kr*F laser, an energy density of 10 μJ/cm2 on the emitter surface was obtained at E=105 V/cm
Keywords :
CVD coatings; antenna arrays; diamond; microwave photonics; optical pulse generation; photoconducting switches; submillimetre wave antennas; submillimetre wave generation; C; CVD diamond film; diamond photoconductive antenna array; electric field stress; focusing power; high-peak-power THz radiation generation; photoconductive gaps; photoconductive switch arrayed antenna; saturation problems; ultrashort pulse laser; Antenna arrays; Electric breakdown; Laboratories; Optical arrays; Optical materials; Photoconducting devices; Photoconducting materials; Photoconductivity; Surface emitting lasers; Switches;
Conference_Titel :
Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7105-4
DOI :
10.1109/LEOS.2001.968980
