Presentation 2007-11-28
High power sub-terahertz electromagnetic wave radiationfrom GaN photoconductive switch
Osamu Imafuji, Brahm Pal Singh, Yutaka Hirose, Yasuyuki Fukushima, Shinichi Takigawa,
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Abstract(in English) We present apparently the first observation of sub-terahertz electromagnetic wave emission from GaN based large aperture photoconductive switches (LA-PCSWs) excited by ultraviolet femtosecond laser pulses. The photoconductive layer of the GaN LA-PCSW is doped with carbon giving rise to a resistivity as high as 60M□cm. The absolute energy of the emitted radiation pulses is measured to be 93.3pJ/pulse under 500V bias voltage. The Fourier spectrum of the measured pulse by the time-domain-spectroscopy shows the main components lie in 0.1-0.2THz regime.
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Keyword(in English) GaN / photoconductive switch / terahertz / electromagnetic wave emission
Paper # ED2007-201
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Committee ED
Conference Date 2007/11/20(1days)
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Registration To Electron Devices (ED)
Language JPN
Title (in Japanese) (See Japanese page)
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Title (in English) High power sub-terahertz electromagnetic wave radiationfrom GaN photoconductive switch
Sub Title (in English)
Keyword(1) GaN
Keyword(2) photoconductive switch
Keyword(3) terahertz
Keyword(4) electromagnetic wave emission
1st Author's Name Osamu Imafuji
1st Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.()
2nd Author's Name Brahm Pal Singh
2nd Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
3rd Author's Name Yutaka Hirose
3rd Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
4th Author's Name Yasuyuki Fukushima
4th Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
5th Author's Name Shinichi Takigawa
5th Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
Date 2007-11-28
Paper # ED2007-201
Volume (vol) vol.107
Number (no) 355
Page pp.pp.-
#Pages 5
Date of Issue