Uniform Surface Patterning with Two-Dimensional Gold Nanoparticle Array Excited by Oblique Femtosecond Laser Irradiation

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概要

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• We present optical field distributions and nanohole patterning properties on a silicon substrate when a femtosecond laser is irradiated obliquely to a two-dimensional (2D) gold nanoparticle array on a silicon surface. It is necessary to control plasmon polaritons in a gold nanoparticle array by adjusting interparticle distance and the incident angle of the laser for uniform nanohole patterning with an 800 nm femtosecond laser. The uniform 2D nanohole patterning is studied by finite-difference time-domain (FDTD) calculation and experiment using a femtosecond laser. Using an array with gold particles of 200 nm diameter, the near-field intensity on the Si surface is much larger than that of a single isolated particle if the interparticle distance is larger than 200 nm and the incident angle is approximately 50°. The oblique irradiation of p-polarized incident laser to the surface of the substrate ensures that uniform nanohole array patterning is achieved.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2010-05-25

著者

• Mitsuhiro Terakawa

  School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

• Miyanishi Tomoya

  School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

• Tanaka Yuto

  School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

• Terakawa Mitsuhiro

  School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

• Minoru Obara

  School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

• Yuto Tanaka

  School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

• Tomoya Miyanishi

  School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

関連論文

• Uniform Surface Patterning with Two-Dimensional Gold Nanoparticle Array Excited by Oblique Femtosecond Laser Irradiation
• Evolution of Femtosecond Laser-Induced Surface Ripples on Lithium Niobate Crystal Surfaces
• Evolution of Femtosecond Laser-Induced Surface Ripples on Lithium Niobate Crystal Surfaces

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