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2008/04/07(Mon) 21:59

Terahertz Radiation from Femtosecond-laser-irradiated InAs under High Magnetic Field

Terahertz (THz) radiation from femtosecond-laser-irradiated InAs (100) surface is investigated. It is found that THz-radiation spectrum exhibits two inter-related phenomena in a strong magnetic field under the Voigt configuration. The peak shift of THz-radiation spectrum toward lower frequency is observed with increasing the magnetic field. Additionally, THz-radiation spectrum is found to posses a periodic structure owing to the interference of THz-radiation pulses from the front and back surfaces of the InAs substrate.

Institute for Molecular Science: H. Takahashi, A. Quema, M. Goto, S. Ono, N. Sarukura
IMR, Tohoku University: G. Nishijima, K. Watanabe
Reference: H. Takahashi, A. Quema, M. Goto, N. Sarukura, G. Nishijima, K. Watanabe, "Physical origin of magnetically induced periodic structure observed in terahertz radiation spectrum emitted from InAs", to be published in JJAP 2004.


分子科学研究所:高橋啓司, アレックス・ケマ, 後藤昌弘, 小野晋吾, 猿倉信彦
東北大学 金属材料研究所:西島 元, 渡辺和雄