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Proceedings Paper

THz wave up-frequency turning by rapidly plasma creation
Author(s): Akinori Nishida; Masahiro Nakata; Takafumi Oba; Takeshi Higashiguchi; Noboru Yugami; Yasuhiko Sentoku; Ryosuke Kodama
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Paper Abstract

When plasmas are instantaneously created around an electromagnetic wave, frequency of the wave up-converted to the frequency, which depends on the plasma frequency. This phenomenon is called as the flash-ionization predicted by S. C. Wilks et al [1]. The theory requires not only the plasma creation in time much shorter than an oscillation period of the electromagnetic wave but also plasma length much longer than a wavelength of it. We have demonstrated the proof of principle experiment using the interaction between a terahertz wave and plasmas created by an ultra short laser pulse, which ensures the plasma creation time-scale much shorter than a period of electromagnetic source wave and plasma length longer than a wavelength of the wave. We observed frequency upconversion from 0.35 THz to 3.3 THz by the irradiance of the Ti:sapphire laser in ZnSe crystal.

Paper Details

Date Published: 7 September 2011
PDF: 9 pages
Proc. SPIE 8119, Terahertz Emitters, Receivers, and Applications II, 81190L (7 September 2011); doi: 10.1117/12.892900
Show Author Affiliations
Akinori Nishida, Osaka Univ. (Japan)
Masahiro Nakata, Utsunomiya Univ. (Japan)
Takafumi Oba, Utsunomiya Univ. (Japan)
Takeshi Higashiguchi, Utsunomiya Univ. (Japan)
Japan Science and Technology Agency (Japan)
Noboru Yugami, Utsunomiya Univ. (Japan)
Japan Science and Technology Agency (Japan)
Yasuhiko Sentoku, Univ. of Nevada, Reno (United States)
Ryosuke Kodama, Osaka Univ. (Japan)
Japan Science and Technology Agency (Japan)

Published in SPIE Proceedings Vol. 8119:
Terahertz Emitters, Receivers, and Applications II
Manijeh Razeghi; Nicolas Péré-Laperne; Henry O. Everitt; John M. Zavada; Tariq Manzur, Editor(s)

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