高強度レーザー誘起表面プラズモン共鳴による高速電子の高効率生成

三島 陽介; 羽原 英明; Prashant K. SINGH; Amitava ADAK; Gourab CHATTERJEE; Amit D. LAD; BRIJESH P.; Malay DALUI; 井上 雅彦; JHA J.; Sheroy TATA; Madhu T. TRIVIKRAM; KRISHNAMURTHY M.; Ravindra G. KUMAR; 田中 和夫

doi:10.2184/lsj.43.9_638

Effi cient Production of Fast Electron Via Surface Plasmon Resonance Induced by Intense Laser Light

Yosuke MISHIMA, Hideaki HABARA, Prashant K. SINGH, Amitava ADAK, Gourab CHATTERJEE, Amit D. LAD, BRIJESH P., Malay DALUI, Masahiko INOUE, JHA J., Sheroy TATA, Madhu T. TRIVIKRAM, KRISHNAMURTHY M., Ravindra G. KUMAR, Kazuo A. TANAKA

Author information

Yosuke MISHIMA
Division of Electronic, Information, and Energy Engineering, Graduate School of Engineering
Hideaki HABARA
Division of Electronic, Information, and Energy Engineering, Graduate School of Engineering
Prashant K. SINGH
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
Amitava ADAK
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
Gourab CHATTERJEE
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
Amit D. LAD
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
BRIJESH P.
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
Malay DALUI
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
Masahiko INOUE
Department of Electrical and Electronic Engineering, Faculty of Science and Engineering
JHA J.
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
Sheroy TATA
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
Madhu T. TRIVIKRAM
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
KRISHNAMURTHY M.
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
Ravindra G. KUMAR
Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research
Kazuo A. TANAKA
Division of Electronic, Information, and Energy Engineering, Graduate School of Engineering

Keywords: Intense laser, Surface plasmon resonance, Fast electron, Grating

JOURNAL FREE ACCESS

2015 Volume 43 Issue 9 Pages 638-

DOI https://doi.org/10.2184/lsj.43.9_638

Details

Abstract

High-energy electrons are generated when a high intensity(1019 W/m2), 30-femtosecond laser pulse irradiates a grating target at the resonant condition of surface plasmon excitation. The number of observed electrons for the grating target is 16 times higher than that for a plane foil target. A finite difference time domain simulation demonstrates a sharp dip of refl ectivity by surface plasmon excitation at this condition, and a particle-in-cell simulation well reproduces the trend of electron energy spectra measured in the experiment. The acceleration mechanism of the fast electrons can be explained by J × B acceleration, based on the agreement of the measured slope temperatures with those provided by numerical scaling laws.

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