Analysis and Evaluation of Laser-Induced Damage of Zig-Zag Slab Laser Amplifier

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概要

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• The laser damage on a total internal reflection (TIR) surface as well as on entrance and exit faces was evaluated to design a zig-zag slab laser. Incorporating a phase shift by the Goos–Hänchen effect on a TIR surface of a laser slab in contact with water, formulas for a laser-induced damage threshold (LIDT) were modified. We determined a method for the designing the geometry of a zig-zag slab laser based on LIDT. A thin film for anti-reflection (AR) with a high LIDT must be formed on the entrance and exit faces of a laser slab glass. A sol–gel thin film was adopted for the AR coating of a high-power laser due to its high LIDT. We devised an effective dip-coating method to form a sol–gel thin film uniformly on a small area. The LIDT of the sol–gel thin film was measured and evaluated with a single mode Q-switch Nd:YAG laser by a one-on-one measurement technique.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2008-06-25

著者

• IZAWA Yasukazu

  Institute for Laser Technology

• KAN Hirofumi

  Hamamatsu Photonics K.K.

• MATSUMOTO Osamu

  Institute of Laser Engineering, Osaka University

• KANABE Tadashi

  Graduate School of Engineering, University of Fukui

• YASUHARA Ryo

  Institute of Laser Engineering, Osaka University

• KURITA Takashi

  Institute of Laser Engineering, Osaka University

• SEKINE Takashi

  Institute of Laser Engineering, Osaka University

• KAWASHIMA Toshiyuki

  Institute of Laser Engineering, Osaka University

• MIYAMOTO Masahiro

  Hamamatsu Photonics K.K.

• FURUKAWA Hiroyuki

  Institute for Laser Technology

• Motokoshi Shinji

  Institute For Laser Technology

• Norimatsu Takayoshi

  Institute Of Laser Engineering (ile) Osaka University

• Nakatsuka Masahiro

  Institute for Laser Technology, 1-8-4 Utsubo-Honmachi, Nishi-ku, Osaka 550-0004, Japan

• MIYAMOTO Masahiro

  Hamamatsu Photonics K. K.

• Kurita Takashi

  Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan

• Furukawa Hiroyuki

  Institute for Laser Technology, Osaka 550-0004, Japan

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