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Akira Tokuhisa

Nikon

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Publication

Featured researches published by Akira Tokuhisa.

Japanese Journal of Applied Physics | 2001

Measurements of the Nonlinear Refractive Index of an Er3+-Doped Bi2O3-Based Glass Fiber

Hiroshi Kitano; Akira Tokuhisa; Masaaki Doi; Soichi Owa

A nonlinear refractive index n2 determines the spectral broadening of optical pulses due to self-phase modulation. We report on the generation of kilowatt peak power optical pulses by an Er3+-doped Bi2O3-based glass fiber amplifier. We estimate n2 of a Bi2O3-based glass fiber by measuring the spectral broadening of output pulses from the fiber amplifier. The obtained value of n2 is (4.9±0.6)×10-19 m2/W at 1.55 µm wavelength. To our knowledge, this represents the first evaluation of n2 in an Er3+-doped Bi2O3-based glass fiber.

Archive | 2003

LIGHT SOURCE DEVICE AND LIGHT IRRADIATION APPARATUS

Hitoshi Kawai; Hiroshi Kitano; Akira Tokuhisa; 北野 博史; 徳久 章; 河井 斉

Archive | 2004

Light source unit and light irradiation unit

Akira Tokuhisa; Hiroshi Kitano; Hitoshi Kawai

Archive | 2005

Wavelength converting optical system, laser light source, exposure apparatus, mask examining apparatus, and macromolecular crystal lens machining device

Akira Tokuhisa; Hitoshi Kawai; Yoshinori Oshita

Archive | 2005

Ultraviolet light source, laser treatment apparatus comprising ultraviolet light source, and exposure apparatus comprising ultraviolet light source

Akira Tokuhisa; Hiroshi Kitano

conference on lasers and electro optics | 2003

UV light source using fiber amplifier and nonlinear wavelength conversion

Hitoshi Kawai; Akira Tokuhisa; Masaaki Doi; Satoshi Miwa; Hiroshi Matsuura; Hiroshi Kitano; Soichi Owa

Archive | 2006

Wavelength converting optical system, laser light source, exposure apparatus, device for inspecting object of inspection, and polymer crystal working apparatus

Akira Tokuhisa; Yoshinori Oshita

Archive | 2003

Ultraviolet light source, phototherapy apparatus using ultraviolet light source, and exposure system using ultraviolet light source

Akira Tokuhisa; Hiroshi Kitano

Archive | 2002

Light source device and light irradiation device, and device manufacturing method

Akira Tokuhisa; Soichi Owa

Archive | 2010

Seed light generation device, light source device, adjustment method thereof, light irradiation device, exposure device, and device manufacturing method

Akira Tokuhisa; Naoto Inaba

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Hiroshi Kitano

Nikon

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Soichi Owa

Nikon

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Hitoshi Kawai

Nikon

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Yasutoshi Takada

Nikon

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Masaaki Doi

Tohoku Gakuin University

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Naoto Inaba

Nikon

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Yoshinori Oshita

Nikon

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Tetsuya Yamamoto

Kochi University of Technology

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Moriyuki Fujita

Harvard University

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