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Featured researches published by Tsutomu Mizugaki.


Applied Optics | 2000

Influence of sodium impurities on ArF excimer-laser-induced absorption in CaF 2 crystals

Norio Komine; Shigeru Sakuma; Masaki Shiozawa; Tsutomu Mizugaki; Eiji Sato

The formation of color centers induced by irradiation with ArF excimer lasers in CaF(2) crystals was found to depend strongly on the sodium impurity concentration. Sodium-related color centers were generated by two-photon absorption because the slope of the induced absorption coefficient just after irradiation started was proportional to the square of the laser fluence. The saturation absorption also depended on laser fluence, and a photobleaching induced absorption phenomenon was observed. We concluded that the saturation absorption level was determined by the equilibrium between two-photon excitation and one-photon reverse reaction.


Archive | 1999

Manufacturing method for calcium fluoride and calcium fluoride for photolithography

Shigeru Sakuma; Tsutomu Mizugaki; Kazuo Kimura; Shuuichi Takano


Archive | 1998

Method for annealing single crystal fluoride and method for manufacturing the same

Tsutomu Mizugaki; Shuuichi Takano


Archive | 1998

Manufacturing method for calcium fluoride crystal and processing method for calcium fluoride powder

Tsutomu Mizugaki; Kazuo Kimura; Shuuichi Takano


Archive | 1996

Production of calcium fluoride crystal

Tsutomu Mizugaki; Hidemi Nishikawa; Shigeru Sakuma; Masaki Shiozawa; Shuichi Takano; 繁 佐久間; 正樹 塩澤; 勉 水垣; 秀美 西川; 修一 高野


Archive | 1996

Calcium fluoride crystal and production thereof

Tsutomu Mizugaki; Shigeru Sakuma; Masaki Shiozawa; 繁 佐久間; 正樹 塩澤; 勉 水垣


Archive | 1994

Fluorite for photolithography

Tsutomu Mizugaki; Hidemi Nishikawa; Shigeru Sakuma; Masaki Shiozawa; Shuichi Takano; 繁 佐久間; 正樹 塩澤; 勉 水垣; 秀美 西川; 修一 高野


Archive | 1997

Production of fluorite single crystal

Tsutomu Mizugaki; Hidemi Nishikawa; Shigeru Sakuma; Masaki Shiozawa; Shuichi Takano; 繁 佐久間; 正樹 塩澤; 勉 水垣; 秀美 西川; 修一 高野


Archive | 1997

PRODUCTION APPARATUS FOR FLUORITE OF LARGE DIAMETER AND ITS PRODUCTION

Tsutomu Mizugaki; Hidemi Nishikawa; Shigeru Sakuma; Shuichi Takano; 繁 佐久間; 勉 水垣; 秀美 西川; 修一 高野


Archive | 1997

Method for annealing fluorite single crystal

Tsutomu Mizugaki; Hidemi Nishikawa; Shigeru Sakuma; Masaki Shiozawa; Shuichi Takano; 繁 佐久間; 正樹 塩澤; 勉 水垣; 秀美 西川; 修一 高野

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