Prof. Koichi Iwata Profile

Prof. Koichi Iwata

Professor

SPIE Involvement:

Author

Proceedings Article | 5 May 2012 Paper

Two-dimensional analysis of generalized grating imaging in the Talbot-Lau arrangement

Koichi Iwata

Proceedings Volume 8429, 84290T (2012) https://doi.org/10.1117/12.921980

KEYWORDS: Light sources, Optical design, Diffraction, Shearing interferometers, X-rays, X-ray optics, Profilometers, Imaging arrays, Spatial frequencies, Diffraction gratings

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Proceedings Article | 27 August 2005 Paper

High resolution refractive index sensor with a crossed guided-mode resonant grating

Hisao Kikuta, Koichi Fujita, Akio Mizutani, Hiroshi Toyota, Koichi Iwata

Proceedings Volume 5931, 59310N (2005) https://doi.org/10.1117/12.616678

KEYWORDS: Refractive index, Polarization, Reflectivity, Water, Sensors, Bioalcohols, Liquids, Transmittance, Silica, Optical design

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Proceedings Article | 26 October 2004 Paper

X-ray shearing interferometer and tomographic reconstruction of refractive index from its data

Koichi Iwata, Yoshihiro Takeda, Hisao Kikuta

Proceedings Volume 5535, (2004) https://doi.org/10.1117/12.559457

KEYWORDS: X-rays, Shearing interferometers, Interferometers, Crystals, Refractive index, Diffraction, Tomography, Reconstruction algorithms, X-ray sources, Diffraction gratings

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Proceedings Article | 8 October 2004 Paper

Optical elements with subwavelength structured surfaces

Hisao Kikuta, Hiroshi Toyota, Wanji Yu, Akio Mizutani, Koichi Iwata

Proceedings Volume 5515, (2004) https://doi.org/10.1117/12.559354

KEYWORDS: Optical components, Polarization, Refractive index, Diffraction gratings, Waveguides, Wave plates, Optical filters, Thin films, Birefringence, Reflectivity

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Proceedings Article | 29 December 2003 Paper

Design and fabrication of guided-mode resonant grating filter with antireflection structured surface

Hiroshi Toyota, Akio Mizutani, Hisao Kikuta, Koichi Iwata

Proceedings Volume 5184, (2003) https://doi.org/10.1117/12.505407

KEYWORDS: Antireflective coatings, Reflectivity, Optical filters, Thin films, Refractive index, Silica, Polarization, Reflection, Waveguides, Reactive ion etching

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Proceedings Article | 29 December 2003 Paper

Simulations of optical switching effects of a guided-mode resonant grating filter with a Kerr medium

Akio Mizutani, Hisao Kikuta, Koichi Iwata

Proceedings Volume 5184, (2003) https://doi.org/10.1117/12.506687

KEYWORDS: Reflectivity, Optical filters, Optical switching, Nonlinear filtering, Waveguides, Finite-difference time-domain method, Refractive index, Transmittance, Optical simulations, Kerr effect

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Proceedings Article | 19 November 2003 Paper

Interferometric absolute measurement of flatness along circles and their unification

Shohachi Sonozaki, Koichi Iwata, Yoshihisa Iwahashi

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.524827

KEYWORDS: Mirrors, Interferometry, Fizeau interferometers, Standards development, Interferometers, Inspection, Fringe analysis, Silicon

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Proceedings Article | 19 November 2003 Paper

Refractive index imaging by computed tomography using an X-ray shearing interferometer

Koichi Iwata, Hisao Kikuta, Shuji Sugimoto

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.523831

KEYWORDS: X-rays, Refractive index, Shearing interferometers, X-ray imaging, Interferometers, Computed tomography, Absorption, Tomography, Phase interferometry, X-ray sources

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Proceedings Article | 3 November 2003 Paper

Fabrication of polymer cantilevers for force-controlled atomic force microscope

Nobuhiro Kato, Choong Sik Park, Toshiro Matsumoto, Hisao Kikuta, Koichi Iwata

Proceedings Volume 5183, (2003) https://doi.org/10.1117/12.505434

KEYWORDS: Silicon, Oxides, Photomasks, Atomic force microscope, Actuators, Polymers, Semiconducting wafers, Anisotropic etching, Scanning electron microscopy, Sensors

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Proceedings Article | 29 July 2002 Paper

Interferometric system for measuring position and orientation of a positioning stage

Jie Zhang, Koichi Iwata, Hisao Kikuta, Choong Park

Proceedings Volume 4900, (2002) https://doi.org/10.1117/12.484571

KEYWORDS: Interferometers, Distance measurement, Interferometry, 3D image processing, Sensors, Retroreflectors, Reflectors, Image sensors, Image processing, Target detection

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Proceedings Article | 8 May 2001 Paper

Refractive index sensor with a guided-mode resonant grating filter

Hisao Kikuta, Naoya Maegawa, Akio Mizutani, Koichi Iwata, Hiroshi Toyota

Proceedings Volume 4416, (2001) https://doi.org/10.1117/12.427053

KEYWORDS: Refractive index, Optical filters, Sensors, Liquids, Water, Reflectivity, Diffraction gratings, Light wave propagation, Radio propagation, Optical design

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Proceedings Article | 8 May 2001 Paper

Real-time polarimeter with a form-birefringent micro retarder array

Hisao Kikuta, Hisashi Haccho, Koichi Iwata, Tetsuya Hamamoto, Hiroshi Toyota, Tsutomu Yotsuya

Proceedings Volume 4416, (2001) https://doi.org/10.1117/12.427019

KEYWORDS: Wave plates, Polarimetry, Polarizers, Linear polarizers, Thin films, Silica, Polarization, Sensors, Diffraction gratings, Imaging systems

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Proceedings Article | 16 August 1996 Paper

Subwavelength gratings optimized for broadband quarter-wave plates

Hisao Kikuta, Yasushi Ohira, Koichi Iwata

Proceedings Volume 2873, (1996) https://doi.org/10.1117/12.246224

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Proceedings Article | 20 October 1992 Paper

Phase-shifting common-path interferometers using double-focus lenses for surface profiling

Hisao Kikuta, Koichi Iwata

Proceedings Volume 1720, (1992) https://doi.org/10.1117/12.132120

KEYWORDS: Interferometers, Profiling, Phase shifting, Lenses, Wave plates, Calcite, Phase shifts, Polarization, Ray tracing, Imaging systems

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Proceedings Article | 1 May 1991 Paper

Studies of the excited states of biological systems using UV-excited resonance Raman and picosecond transient Raman spectroscopy

Terry Gustafson, Koichi Iwata, William Weaver, Lisa Huston, Ronda Benson

Proceedings Volume 1403, (1991) https://doi.org/10.1117/12.57303

KEYWORDS: Raman spectroscopy, Picosecond phenomena, Molecules, Ultraviolet radiation, Dye lasers, Laser applications, Optical amplifiers, Laser systems engineering, Motion models, Resonance enhancement

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Showing 5 of 15 publications

SPIE Conference Volume | 8 May 2001

Optical Engineering for Sensing and Nanotechnology (ICOSN 2001)

Conference Committee Involvement (2)

Optical Engineering for Sensing and Nanotechnology

6 June 2001 | Yokohama, Japan

Optical Engineering for Sensing and Nanotechnology (ICOSN '01)

6 June 2001 | Yokohama, Japan

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