Evolution of Femtosecond Laser-Induced Surface Ripples on Lithium Niobate Crystal Surfaces

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概要

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• We fabricated periodic ripple structures on the surface of a lithium niobate crystal by irradiation with femtosecond laser pulses and observed the evolution of these structures under irradiation with successive laser pulses. After just a few laser pulses we observed nanorod-shaped craters, aligned with each other but randomly distributed over the surface. The nanocraters are caused by nanoablation at defects in the crystal surface. With increasing pulse number, side-lobed nanocraters appear and light scattered from the initial nanorod-shaped craters at the crystal surface interferes with the incident light, causing the formation of periodic structures.

• 2013-11-25

著者

• OBARA Minoru

  School of Integrated Design Engineering, Graduate School of Science and Technology, Keio University

• Terakawa Mitsuhiro

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

• Shimizu Hisashi

  School of Integrated Design Engineering, Keio University, Yokohama 223-8522, Japan

• Obara Go

  School of Integrated Design Engineering, Keio University, Yokohama 223-8522, Japan

• Mazur Eric

  Department of Physics, Harvard University, Cambridge, MA 02138, U.S.A.

• Obara Minoru

  School of Integrated Design Engineering, Keio University, Yokohama 223-8522, Japan

• Terakawa Mitsuhiro

  School of Integrated Design Engineering, Keio University, Yokohama 223-8522, Japan

関連論文

• Femtosecond Laser Processing Using Subwavelength Thin Metal Slit Arrays
• 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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