Dr. Youichi Bitou Profile

Dr. Youichi Bitou

at National Metrology Institute of Japan

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Author

Publications (12)

PROCEEDINGS ARTICLE | October 25, 2016

λ/100 reference flat for commercially available Fizeau interferometer

Proc. SPIE. 9687, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Subnanometer Accuracy Measurement for Synchrotron Optics and X-Ray Optics

KEYWORDS: Metrology, Silicon, Photography, Finite element methods, Measurement devices, Photomasks, Geometrical optics, Semiconducting wafers, Adhesives, Fizeau interferometers

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PROCEEDINGS ARTICLE | November 3, 2011

Measurement of absolute optical thickness by wavelength tuning interferometer

Proc. SPIE. 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World

KEYWORDS: Wafer-level optics, Refractive index, Beam splitters, Silica, Interferometers, Glasses, Interferometry, Optical testing, Wavelength tuning, Phase measurement

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PROCEEDINGS ARTICLE | August 11, 2008

Measurement of absolute optical thickness distribution of a mask-glass by wavelength tuning interferometry

Proc. SPIE. 7063, Interferometry XIV: Techniques and Analysis

KEYWORDS: Refractive index, Beam splitters, Ferroelectric materials, Interferometers, Glasses, Interferometry, Optical testing, Wavelength tuning, Phase measurement, Fizeau interferometers

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PROCEEDINGS ARTICLE | August 14, 2006

Absolute interferometry for surface shapes with large steps by wavelength tuning with a mechanical phase shift

Proc. SPIE. 6292, Interferometry XIII: Techniques and Analysis

KEYWORDS: Beam splitters, Ferroelectric materials, Silica, Interferometry, Phase interferometry, Profiling, Wavelength tuning, Phase measurement, Phase shifts, Fizeau interferometers

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PROCEEDINGS ARTICLE | August 18, 2005

Phase-shifting laser diode interferometry with equal phase steps using a Fabry-Perot cavity

Proc. SPIE. 5879, Recent Developments in Traceable Dimensional Measurements III

KEYWORDS: Mirrors, Fabry–Perot interferometers, Ferroelectric materials, Modulation, Interferometers, Interferometry, Phase interferometry, Semiconductor lasers, Phase measurement, Phase shifts

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SPIE Journal Paper | April 1, 2004

Rubidium-stabilized diode laser for high-precision interferometer

Bitou, Youichi , Sasaki, Kaoru , Inaba, Hajime , Hong, Feng-Lei , Onae, Atsushi

OE Vol. 43 Issue 04

KEYWORDS: Laser development, Semiconductor lasers, Interferometers, Laser stabilization, Rubidium, Modulation, Absorption, Femtosecond phenomena, Light sources, Interferometry

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SPIE Journal Paper | April 1, 2004

Two-dimensional holographic frequency-division demultiplexing using an acousto-optic modulator

Bitou, Youichi

OE Vol. 43 Issue 04

KEYWORDS: Holography, Bragg cells, Diffraction, Multiplexing, Diffraction gratings, Adaptive optics, Holograms, 3D image reconstruction, Image transmission, Phase modulation

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PROCEEDINGS ARTICLE | November 20, 2003

Simple rubidium stabilized diode laser for gauge block interferometer

Proc. SPIE. 5190, Recent Developments in Traceable Dimensional Measurements II

KEYWORDS: Light sources, Modulation, Interferometers, Laser development, Phase shift keying, Semiconductor lasers, Frequency modulation, Laser stabilization, Rubidium, Absorption

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PROCEEDINGS ARTICLE | October 22, 2001

Gauge block interferometer using three frequency-stabilized lasers

Proc. SPIE. 4401, Recent Developments in Traceable Dimensional Measurements

KEYWORDS: Mirrors, Light sources, Fringe analysis, Modulation, Interferometers, Laser development, Nd:YAG lasers, Semiconductor lasers, Laser stabilization, Helium neon lasers

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PROCEEDINGS ARTICLE | May 3, 2001

Frequency reproducibility of I2-stabilized Nd:YAG lasers

Proc. SPIE. 4269, Laser Frequency Stabilization, Standards, Measurement, and Applications

KEYWORDS: Modulation, Polarization, Spectroscopy, Crystals, Nd:YAG lasers, Phase shift keying, Laser stabilization, Iodine, Iodine cells, Laser systems engineering

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PROCEEDINGS ARTICLE | April 29, 1999

High-speed incoherent-to-coherent image converter using GaAs

Proc. SPIE. 3729, Selected Papers from International Conference on Optics and Optoelectronics '98

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SPIE Journal Paper | April 1, 1999

High-speed and high-contrast incoherent-to-coherent converter that uses a GaAs single crystal

Bitou, Youichi , Osugi, Yukihisa , Minemoto, Takumi

OE Vol. 38 Issue 04

KEYWORDS: Gallium arsenide, Crystals, Optically addressed spatial light modulators, Spatial light modulators, CCD cameras, Electrons, Modulation transfer functions, Image processing, Glasses, Coherent optics

Showing 5 of 12 publications

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