Prof. Yukihiro Ishii Profile

Prof. Yukihiro Ishii

Professor, former at Tokyo University of Science

Publications (47)

Proceedings Article | 11 March 2024 Paper

Detection of phase change of light using photorefractive liquid crystals and their application to laser ultrasonics

Takeo Sasaki, Toshinobu Takashi, Yukihiro Ishii, Khoa Van Le, Yumiko Naka

Proceedings Volume 12883, 1288305 (2024) https://doi.org/10.1117/12.3005672

KEYWORDS: Laser ultrasonics, Liquid crystals, Laser irradiation, Vibration, Reflection, Pulse signals, Acoustic waves, Refractive index

Read Abstract +

Proceedings Article | 29 September 2023 Poster + Paper

Laser ultrasonics using photorefractive liquid crystals

Takeo Sasaki, Toshinobu Takashi, Kaita Suzuki, Gouta Ikeda, Miku Nagaoka, Yukihiro Ishii, Khoa Van Le, Yumiko Naka

Proceedings Volume 12658, 126580J (2023) https://doi.org/10.1117/12.2676230

KEYWORDS: Laser ultrasonics, Liquid crystals, Laser irradiation, Vibration, Pulsed laser operation, Aluminum, Reflection, Pulse signals, Acoustic waves, Refractive index

Read Abstract +

Proceedings Article | 3 October 2022 Presentation + Paper

Photorefractive effect of smectic liquid crystals and their application to laser ultrasonic remote sensing

Takeo Sasaki, Takaaki Yagami, Toshinobu Takashi, Kaita Suzuki, Gouta Ikeda, Yukihiro Ishii, Khoa Le, Yumiko Naka

Proceedings Volume 12207, 1220702 (2022) https://doi.org/10.1117/12.2633374

KEYWORDS: Liquid crystals, Ultrasonics, Photorefraction, Refractive index, Aluminum, Wave plates, Laser irradiation, Holograms, Environmental sensing, Electrons

Read Abstract +

Proceedings Article | 14 September 2010 Paper

Tunable laser-diode digital holographic interferometry without measuring wavelength differences

Yukihiro Ishii, Kazuki Yoshida

Proceedings Volume 7387, 73870P (2010) https://doi.org/10.1117/12.871591

KEYWORDS: Holograms, Holographic interferometry, Digital holography, Calibration, Semiconductor lasers, Laser interferometry, Tunable lasers, Speckle, 3D image reconstruction, Light sources

Read Abstract +

Proceedings Article | 31 August 2010 Paper

Holographic recording in a doubly doped lithium niobate crystal with two wavelengths: a blue laser diode and a green laser

Yuichi Komori, Yukihiro Ishii

Proceedings Volume 7781, 778119 (2010) https://doi.org/10.1117/12.864156

KEYWORDS: Crystals, Holograms, Laser crystals, Semiconductor lasers, Holography, Diffraction, Iron, 3D image reconstruction, Manganese, Multiplexing

Read Abstract +

Proceedings Article | 3 February 2009 Paper

Multiply phase-shifted Fizeau interferometric sensor with a tunable laser diode

Sayaka Idoi, Hayato Fujita, Masayuki Kagawa, Hideki Funamizu, Yukihiro Ishii

Proceedings Volume 7157, 71571P (2009) https://doi.org/10.1117/12.816124

KEYWORDS: Phase shifts, Phase measurement, Fourier transforms, Phase interferometry, Calibration, Semiconductor lasers, Interferometry, Fizeau interferometers, Sensors, Diodes

Read Abstract +

Proceedings Article | 3 February 2009 Paper

Generation of fractal speckle using computer-generated holograms and its application to speckle correlometry

Hideki Funamizu, Masayuki Kagawa, Yukihiro Ishii

Proceedings Volume 7157, 71571Q (2009) https://doi.org/10.1117/12.816125

KEYWORDS: Speckle, Fractal analysis, Computer generated holography, Sensor technology, Charge-coupled devices, Information operations, Optical components, Fluctuations and noise, Current controlled current source, Laser applications

Read Abstract +

Proceedings Article | 2 February 2009 Paper

Phase-shifting interferometry using a multi-mode blue laser diode

Jun Chen, Yoh Tanaka, Suezou Nakadate, Yukihiro Ishii

Proceedings Volume 7157, 715702 (2009) https://doi.org/10.1117/12.811995

KEYWORDS: Semiconductor lasers, Phase shifts, Wavefronts, Interferometers, Phase interferometry, Fringe analysis, Gallium nitride, Laser development, Digital video discs, Phase shift keying

Read Abstract +

Proceedings Article | 9 September 2008 Paper

Laser-diode stratified reflection volume holograms with red-sensitive photopolymers

Yukihiro Ishii, Toshihiro Kubota

Proceedings Volume 7056, 705608 (2008) https://doi.org/10.1117/12.796912

KEYWORDS: Holograms, Photopolymers, Volume holography, Semiconductor lasers, Diffraction, 3D image reconstruction, Holography, Glasses, Modulation, Mirrors

Read Abstract +

Proceedings Article | 24 January 2008 Paper

Interferometric sensing for measuring the complex amplitudes of a 3-D object by R, G and B tunable lasers

Jun Sato, Yukihiro Ishii

Proceedings Volume 6829, 682927 (2008) https://doi.org/10.1117/12.768578

KEYWORDS: Phase shifts, 3D image reconstruction, Digital holography, Tunable lasers, Holograms, Wavelength tuning, 3D image processing, Interferometers, Semiconductor lasers, CCD cameras

Read Abstract +

Proceedings Article | 24 January 2008 Paper

Multiple phase-shifting white-light interferometry for quantitative detection

Tomotake Terasawa, Atsushi Wada, Yukihiro Ishii

Proceedings Volume 6829, 682928 (2008) https://doi.org/10.1117/12.768580

KEYWORDS: Detection and tracking algorithms, Interferometry, Phase interferometry, Algorithm development, Light sources, Phase shifts, Phase measurement, Light, Computer simulations, Solids

Read Abstract +

Proceedings Article | 26 November 2007 Paper

Depth scanning with wavelength-stepped laser-diode interferometer

Ribun Onodera, Yukihiro Ishii

Proceedings Volume 6829, 682909 (2007) https://doi.org/10.1117/12.760940

KEYWORDS: Modulation, Phase shifts, Interferometers, Mirrors, Laser development, Phase shift keying, Profiling, Semiconductor lasers, High speed cameras, Laser applications

Read Abstract +

Proceedings Article | 9 June 2006 Paper

Multiple object recognition by digital holography with a wavelength-tuned laser diode

Yukihiro Ishii, Takeshi Takahashi

Proceedings Volume 6252, 62521M (2006) https://doi.org/10.1117/12.677165

KEYWORDS: Digital holography, Semiconductor lasers, Holograms, Phase shifts, Optical correlators, Phase measurement, Interferometry, Phase shift keying, Object recognition, Interferometers

Read Abstract +

Proceedings Article | 7 March 2006 Paper

Laser-diode phase-shifting interferometer applied to joint-transform correlator

Takeshi Takahashi, Yukihiro Ishii

Proceedings Volume 4101, (2006) https://doi.org/10.1117/12.498391

KEYWORDS: Phase shifts, Optical correlators, Interferometers, Phase measurement, Charge-coupled devices, Fourier transforms, Phase interferometry, Semiconductor lasers, CCD cameras, Mirrors

Read Abstract +

Proceedings Article | 20 January 2005 Paper

Wavelength-shifting phase-conjugate interferometry for distance measurements with an external-cavity laser diode

Hisashi Maki, Takeshi Takahashi, Yukihiro Ishii

Proceedings Volume 5633, (2005) https://doi.org/10.1117/12.580469

KEYWORDS: Phase conjugation, Interferometers, Distance measurement, Mirrors, Crystals, Reflectivity, Semiconductor lasers, Ferroelectric materials, Modulation, Phase shift keying

Read Abstract +

Proceedings Article | 20 January 2005 Paper

A one-dimensional discrete Hilbert transform for interferometric phases

Ribun Onodera, Yukihiro Ishii

Proceedings Volume 5633, (2005) https://doi.org/10.1117/12.577834

KEYWORDS: Interferometry, Phase interferometry, Linear filtering, Spatial frequencies, Demodulation, Filtering (signal processing), Mirrors, Signal processing, Fringe analysis, Phase measurement

Read Abstract +

Proceedings Article | 20 January 2005 Paper

Wavelength-shifting interferometry by a wide tunable laser source with a new phase-shifting technique

Masato Higashi, Takeshi Takahashi, Ribun Onodera, Yukihiro Ishii

Proceedings Volume 5633, (2005) https://doi.org/10.1117/12.580464

KEYWORDS: Phase shifts, Interferometers, Sapphire lasers, Ferroelectric materials, Phase measurement, Interferometry, Tunable lasers, Light sources, Mirrors, Modulation

Read Abstract +

Proceedings Article | 22 October 2004 Paper

Photorefractive optical processing by high-gain two-wave mixing via beam propagation

Yukihiro Ishii, Takeshi Takahashi

Proceedings Volume 5560, (2004) https://doi.org/10.1117/12.566931

KEYWORDS: Crystals, Two wave mixing, Phase only filters, Laser crystals, Optical correlators, Beam propagation method, Nonlinear crystals, Nonlinear optics, Liquid crystals, Modulators

Read Abstract +

Proceedings Article | 19 November 2003 Paper

Three-dimensional range measurement by a wide tunable laser source with fractional fringe techniques

Yukihiro Ishii, Takeshi Takahashi, Ribun Onodera

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.530102

KEYWORDS: Phase shifts, Interferometers, Sapphire lasers, Phase measurement, Tunable lasers, Distance measurement, 3D metrology, Solids, Electronics, Interferometry

Read Abstract +

Proceedings Article | 21 October 2003 Paper

Photorefractive spectrum-enhanced processing by two-wave mixing in a phase-only filter

Yukihiro Ishii, Takeshi Takahashi

Proceedings Volume 5206, (2003) https://doi.org/10.1117/12.508124

KEYWORDS: Crystals, Phase only filters, Ferroelectric materials, Two wave mixing, Laser crystals, Optical correlators, Nonlinear crystals, Optical filters, Image filtering, Electronic filtering

Read Abstract +

SPIE Journal Paper | 1 January 2003

Phase-shifting Fizeau interference microscope with a wavelength-shifted laser diode

Yukihiro Ishii, Jun Chen, Ribun Onodera, Taizo Nakamura

OE, Vol. 42, Issue 01, (January 2003) https://doi.org/10.1117/12.10.1117/1.1524171

KEYWORDS: Phase shifts, Mirrors, Microscopes, Fizeau interferometers, Reflection, Reflectivity, Thin films, Phase measurement, Semiconductor lasers, Interferometers

Proceedings Article | 20 November 2002 Paper

Laser-diode interferometry and phase-conjugate optics

Yukihiro Ishii, Takeshi Takahashi, Ribun Onodera

Proceedings Volume 4803, (2002) https://doi.org/10.1117/12.453585

KEYWORDS: Interferometers, Phase conjugation, Phase shift keying, Mirrors, Laser interferometry, Interferometry, Semiconductor lasers, Laser optics, Crystals, Crystal optics

Read Abstract +

Proceedings Article | 20 September 2002 Paper

Laser-diode phase-shifting interferometer with a high-speed camera

Ribun Onodera, Yukihiro Ishii

Proceedings Volume 4919, (2002) https://doi.org/10.1117/12.465752

KEYWORDS: Video, Phase shifts, High speed cameras, Interferometers, Phase measurement, Mirrors, Phase shift keying, CCD cameras, Iron, Laser development

Read Abstract +

Proceedings Article | 20 September 2002 Paper

Demodulation technique for interferometric phase with a one-dimensional discrete Hilbert transform

Hiroto Watanabe, Ribun Onodera, Yukihiro Ishii

Proceedings Volume 4919, (2002) https://doi.org/10.1117/12.465828

KEYWORDS: Demodulation, Linear filtering, Interferometry, Filtering (signal processing), Phase interferometry, Mirrors, Fourier transforms, Fringe analysis, Signal processing, Electronic filtering

Read Abstract +

Proceedings Article | 16 September 2002 Paper

Phase-shifting joint transform correlator with a wavelength-shifted laser diode

Takeshi Takahashi, Yukihiro Ishii

Proceedings Volume 4929, (2002) https://doi.org/10.1117/12.483222

KEYWORDS: Phase shifts, Optical correlators, Phase measurement, Semiconductor lasers, Interferometers, Digital holography, Fourier transforms, Charge-coupled devices, Holography, LCDs

Read Abstract +

Proceedings Article | 23 January 2002 Paper

Phase-conjugate distance-measurement interferometer with frequency modulation of a laser diode

Yukihiro Ishii

Proceedings Volume 4459, (2002) https://doi.org/10.1117/12.454008

KEYWORDS: Interferometers, Phase conjugation, Distance measurement, Mirrors, Reflectivity, Crystals, Semiconductor lasers, Distortion, Spectrum analysis, Beam splitters

Read Abstract +

Proceedings Article | 8 May 2001 Paper

Laser-diode joint-transform correlator with a digital interferometric technique

Yukihiro Ishii, Takeshi Takahashi

Proceedings Volume 4416, (2001) https://doi.org/10.1117/12.427060

KEYWORDS: Optical correlators, Interferometry, Phase measurement, Phase interferometry, Phase shifts, Interferometers, Semiconductor lasers, LCDs, Target detection, Fourier transforms

Read Abstract +

Proceedings Article | 19 October 2000 Paper

Laser diode phase-conjugate interferometry with a frequency-modulated continuous-wave technique

Yukihiro Ishii, Takeshi Takahashi

Proceedings Volume 4110, (2000) https://doi.org/10.1117/12.404765

KEYWORDS: Phase conjugation, Mirrors, Interferometers, Crystals, Reflectivity, Semiconductor lasers, Modulation, Laser crystals, Ferroelectric materials, Distance measurement

Read Abstract +

SPIE Journal Paper | 1 December 1999

Frame rate phase-shifting interferometer with a frequency-modulated laser diode

Ribun Onodera, Yukihiro Ishii

OE, Vol. 38, Issue 12, (December 1999) https://doi.org/10.1117/12.10.1117/1.602309

KEYWORDS: Video, Phase shifts, Phase measurement, Interferometers, Semiconductor lasers, CCD cameras, Mirrors, Modulation, Turbulence, Iron

Proceedings Article | 11 November 1999 Paper

Laser-diode interferometer: practice and application

Yukihiro Ishii, Ribun Onodera

Proceedings Volume 3897, (1999) https://doi.org/10.1117/12.369295

KEYWORDS: Interferometers, Phase shifts, Phase shift keying, Phase measurement, Modulation, Distance measurement, Interferometry, Electronics, Semiconductor lasers, Phase interferometry

Read Abstract +

Proceedings Article | 19 July 1999 Paper

Phase-shifting interferometer for distance measurement using a tunable external-cavity laser diode

Yukihiro Ishii, Ribun Onodera, Takeshi Takahashi

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354823

KEYWORDS: Phase shifts, Interferometers, Distance measurement, Semiconductor lasers, Phase measurement, Light sources, Mirrors, Optical testing, Electronics, Interferometry

Read Abstract +

Proceedings Article | 19 July 1999 Paper

Two-wavelength interferometry based on a Fourier-transform technique

Ribun Onodera, Yukihiro Ishii

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354820

KEYWORDS: Phase shift keying, Interferometry, Modulation, Mirrors, Fourier transforms, Electronics, Interferometers, Spatial frequencies, Bandpass filters, Sodium

Read Abstract +

Proceedings Article | 7 May 1999 Paper

Spectrum-enhanced correlator by two-wave mixing in a photorefractive crystal

Takeshi Takahashi, Yukihiro Ishii

Proceedings Volume 3740, (1999) https://doi.org/10.1117/12.347791

KEYWORDS: Phase only filters, Optical correlators, Two wave mixing, Crystals, Ferroelectric materials, Nonlinear optics, Laser crystals, Optical filters, Nonlinear filtering, Image filtering

Read Abstract +

Proceedings Article | 7 May 1999 Paper

Laser diode phase-shifting interferometer operating at a frame rate

Ribun Onodera, Norio Onda, Yukihiro Ishii

Proceedings Volume 3740, (1999) https://doi.org/10.1117/12.347703

KEYWORDS: Video, Phase shifts, Interferometers, Semiconductor lasers, CCD cameras, Phase measurement, Phase shift keying, Laser development, Modulation, Iron

Read Abstract +

Proceedings Article | 9 October 1998 Paper

Phase-conjugate interferometer with a frequency-modulated laser diode

Yukihiro Ishii

Proceedings Volume 3470, (1998) https://doi.org/10.1117/12.326859

KEYWORDS: Phase conjugation, Interferometers, Mirrors, Modulation, Semiconductor lasers, Reflectivity, Crystals, Phase shift keying, Phase shifts, Ferroelectric materials

Read Abstract +

Proceedings Article | 22 September 1997 Paper

Laser diode heterodyne interferometry in two-wave mixing with photorefractive Bi12TiO20 fiberlike crystal

Yukihiro Ishii, Ribun Onodera, Alexei Kamshilin, Timo Jaeaeskelaeinen

Proceedings Volume 3137, (1997) https://doi.org/10.1117/12.287779

KEYWORDS: Crystals, Laser crystals, Two wave mixing, Heterodyning, Interferometry, Mirrors, Semiconductor lasers, Interferometers, Laser optics, Motion measurement

Read Abstract +

Proceedings Article | 30 September 1996 Paper

Laser diode phase conjugate interferometer

Yukihiro Ishii

Proceedings Volume 2896, (1996) https://doi.org/10.1117/12.253215

KEYWORDS: Interferometers, Phase conjugation, Heterodyning, Modulation, Phase interferometry, Mirrors, Phase shifts, Crystals, Phase shift keying, Interferometry

Read Abstract +

Proceedings Article | 1 September 1996 Paper

Improving kinoforms on liquid-crystal spatial light modulators with least-squares techniques

Yukihiro Ishii

Proceedings Volume 2778, 27787N (1996) https://doi.org/10.1117/12.2299158

Read Abstract +

Proceedings Article | 23 August 1996 Paper

Vibration measurement by laser diode holographic interferometry

Yukihiro Ishii

Proceedings Volume 2868, (1996) https://doi.org/10.1117/12.248661

KEYWORDS: Phase shifts, Holographic interferometry, Semiconductor lasers, Interferometers, Holography, Holograms, Doppler effect, Laser interferometry, Pulsed laser operation, Phase shift keying

Read Abstract +

Proceedings Article | 28 August 1995 Paper

Phase-only matched filtering with dual liquid crystal spatial light modulators

Takeshi Takahashi, Yukihiro Ishii

Proceedings Volume 2565, (1995) https://doi.org/10.1117/12.217649

KEYWORDS: Phase only filters, Signal to noise ratio, Liquid crystals, Fourier transforms, Optical signal processing, Binary data, Optical correlators, Phase shift keying, Optical filters, Correlation function

Read Abstract +

Proceedings Article | 14 June 1995 Paper

Two-wavelength laser diode interferometry with one phase meter

Ribun Onodera, Yukihiro Ishii

Proceedings Volume 2544, (1995) https://doi.org/10.1117/12.211860

KEYWORDS: Interferometers, Phase shift keying, Heterodyning, Phase measurement, Signal detection, Modulation, Semiconductor lasers, Interferometry, Phase interferometry, Sensors

Read Abstract +

Proceedings Article | 14 June 1995 Paper

Laser diode phase-shifting interferometer insensitive to the changes in laser power

Yukihiro Ishii, Ribun Onodera

Proceedings Volume 2544, (1995) https://doi.org/10.1117/12.211864

KEYWORDS: Phase shifts, Semiconductor lasers, Interferometers, Phase measurement, Laser applications, Algorithms, Light sources, Frequency modulation, Phase shift keying, Mirrors

Read Abstract +

Proceedings Article | 23 July 1993 Paper

Laser-diode heterodyne interferometry with a self-pumped phase-conjugate mirror

Yukihiro Ishii

Proceedings Volume 1983, 198384 (1993) https://doi.org/10.1117/12.2308711

Read Abstract +

Proceedings Article | 23 July 1993 Paper

Laser-diode fizeau interference microscopy with a phase-shifting technique: error analysis

Yukihiro Ishii

Proceedings Volume 1983, 198383 (1993) https://doi.org/10.1117/12.2308710

Read Abstract +

Proceedings Article | 20 October 1992 Paper

Two-wavelength laser-diode interferometry with electronic calibration techniques

Ribun Onodera, Yukihiro Ishii

Proceedings Volume 1720, (1992) https://doi.org/10.1117/12.132155

KEYWORDS: Interferometers, Calibration, Phase shifts, Phase shift keying, Interferometry, Modulation, Moire patterns, Laser interferometry, Diffraction gratings, Phase measurement

Read Abstract +