Prof. Kaoru Minoshima Profile

Prof. Kaoru Minoshima

Professor, Vice-President at Univ of Electro-Communications

SPIE Involvement:

Author

Area of Expertise:

Optical frequency comb , Precision metrology , Spectroscopy , Ultrafast optics , Unconventional interferometry , Distance and imaging

Websites:

Company Website

Publications (18)

Proceedings Article | 18 June 2024 Presentation

Ultrafast and scan-less three-dimensional imaging using all-optical information conversion with chirped optical frequency comb

Kaoru Minoshima, Takashi Kato

Proceedings Volume 12997, 1299702 (2024) https://doi.org/10.1117/12.3023274

KEYWORDS: Ultrafast imaging, Frequency combs, 3D scanning, 3D image processing

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Proceedings Article | 12 March 2024 Presentation + Paper

Single-photon-level femtosecond time-resolved measurement by asynchronous optical sampling with dual-wavelength comb

Hajime Komori, Prasad Koviri, Masahiro Ishizeki, Haochen Tian, Thomas Schibli, Takashi Kato, Akifumi Asahara, Ryosuke Shimizu, Kaoru Minoshima

Proceedings Volume 12875, 1287508 (2024) https://doi.org/10.1117/12.3001570

KEYWORDS: Pulse signals, Ultrafast phenomena, Femtosecond phenomena, Signal detection, Repetition frequency, Photon counting, Optical testing, Ultrafast measurement systems, Single photon detectors

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Proceedings Article | 8 March 2024 Presentation + Paper

Ultrafast time-resolved single-photon detection using two-color comb based asynchronous optical sampling for quantum applications

Prasad Koviri, Hajime Komori, Masahiro Ishizeki, Haochen Tian, Takashi Kato, Akifumi Asahara, Ryosuke Shimizu, Thomas Schibli, Kaoru Minoshima

Proceedings Volume 12895, 1289504 (2024) https://doi.org/10.1117/12.3002098

KEYWORDS: Ultrafast phenomena, Ultrafast measurement systems, Quantum measurement, Quantum optics, Quantum entanglement, Fiber lasers

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Proceedings Article | 30 March 2020 Presentation

Laser scanning optical-frequency-comb microscopy for multivariate measurement related to amplitude and phase (Conference Presentation)

Takeo Minamikawa, Shota Nakano, Eiji Hase, Akifumi Asahara, Hidenori Koresawa, Takahiko Mizuno, Hirotsugu Yamamoto, Kaoru Minoshima, Takeshi Yasui

Proceedings Volume 11351, 113510B (2020) https://doi.org/10.1117/12.2554983

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Laser-scanning optical microscopy is widely used for the observation of microstructures and the analysis of molecular functions of samples with tightly focused light. Spectroscopic information is also available if a broadband light source is employed. General laser-scanning optical microscopy observes optical intensity by employing a sample- or laser-scanning system for the analysis of samples via reflectance, scattering, absorbance, and laser-induced phenomena. Another visualization method is using optical phase, which can enhance the image contrast of such high transparent materials and nano-step structures. However, broadband spectroscopic phase-contrast imaging with a laser-scanning configuration is slightly tricky due to the interferometric configuration is required to retrieve phase information of each wavelength. If the simultaneous measurement of amplitude and phase spectra is enabled in laser-scanning microscopy, it is possible to realize multivariate measurement to analyze more detailed information of samples based on such as complex refractive index, polarization characteristics, and so on with tightly focused light. To overcome these limitations, in this study, we proposed an optical-frequency-comb (OFC)-based laser scanning optical microscopy. The OFC technique enables fast Fourier transform spectroscopy by using well-defined two OFC lasers without any mechanical scan in the time domain. The combination of the laser scanning optical microscopy and the OFC technique realized the simultaneous and spectroscopic observation of quantitative amplitude and phase images with tight focusing down to the diffraction limit. Furthermore, we realized the analysis of polarization by the direct observation of the amplitude and phase of the orthogonal components. We applied the proposed method to the observation of nano-step structures, phase objects and anisotropic materials to provide a proof-of-principle demonstration of the proposed method. Our proposed approach will serve as a unique and powerful tool for characterizing the materials via complete characterization of optical information such as amplitude, phase, polarization and spectrum.

Proceedings Article | 28 August 2019 Paper

Refractive index sensor based on a combination of optical frequency comb with intracavity multi-mode interference fiber sensor

R. Oe, T. Minamikawa, S. Taue, Y. Nakajima, K. Minoshima, T. Yasui

Proceedings Volume 11199, 111991D (2019) https://doi.org/10.1117/12.2540787

KEYWORDS: Fiber optics sensors, Brain-machine interfaces, Refractive index, Sensors, Single mode fibers, Radio optics, Frequency combs, Mode locking, RF photonics, Photodetectors

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Proceedings Article | 21 May 2019 Paper

Combination of lock-in detection with dual-comb spectroscopy

Hidenori Koresawa, Kyuki Shibuya, Takeo Minamikawa, Akifumi Asahara, Kaoru Minoshima, Takeshi Yasui

Proceedings Volume 10925, 109251A (2019) https://doi.org/10.1117/12.2509619

KEYWORDS: Spectroscopy, Laser induced damage, Time metrology, Spectral resolution, Absorption, Frequency combs, Fourier transforms, Cyanide, Radio optics, Terahertz radiation

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Proceedings Article | 1 March 2019 Paper

Wide axial dynamic range digital holography using multicascade-linked synthetic wavelengths and optical wavelength

M. Yamagiwa, T. Minamikawa, C. Trovato, T. Ogawa, D. G. Ibrahim, Y. Kawahito, R. Oe, K. Shibuya, T. Mizuno, E. Abraham, Y. Mizutani, T. Iwata, H. Yamamoto, K. Minoshima, T. Yasui

Proceedings Volume 10944, 1094414 (2019) https://doi.org/10.1117/12.2509354

KEYWORDS: Beam splitters, 3D image processing, Image resolution, Rubidium, Continuous wave operation, Polarization

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Proceedings Article | 27 February 2019 Presentation + Paper

Simultaneous measurement of concentration and temperature in liquid sample using multi-mode interference fiber comb

Ryo Oe, Takeo Minamikawa, Shuji Taue, Hideki Fukano, Yoshiaki Nakajima, Kaoru Minoshima, Takeshi Yasui

Proceedings Volume 10872, 1087215 (2019) https://doi.org/10.1117/12.2509539

KEYWORDS: Fiber optics sensors, Temperature metrology, Refractive index, Sensors, Liquids, Mode locking, RF photonics, Single mode fibers

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Proceedings Article | 19 February 2018 Paper

Multi-dynamic range compressional wave detection using optical-frequency comb

Takeo Minamikawa, Takashi Masuoka, Ryo Oe, Yoshiaki Nakajima, Yoshihisa Yamaoka, Kaoru Minoshima, Takeshi Yasui

Proceedings Volume 10494, 1049432 (2018) https://doi.org/10.1117/12.2288215

KEYWORDS: Frequency combs, Fiber lasers, Optical fibers, Sensors, Wave sensors, Biomedical optics, Detector development, Signal detection, Signal to noise ratio, Photoacoustic microscopy

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Proceedings Article | 14 February 2018 Paper

Refractive-index-sensing fiber comb using intracavity multi-mode interference fiber sensor

Ryo Oe, Takeo Minamikawa, Shuji Taue, Hideki Fukano, Yoshiaki Nakajima, Kaoru Minoshima, Takeshi Yasui

Proceedings Volume 10488, 1048818 (2018) https://doi.org/10.1117/12.2289252

KEYWORDS: Fiber optics sensors, Brain-machine interfaces, Refractive index, Single mode fibers, Sensors, Radio optics, Mode locking, RF photonics, Photodetectors, Frequency combs

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Proceedings Article | 3 March 2017 Paper

Optical-frequency-comb based ultrasound sensor

Takeo Minamikawa, Takashi Ogura, Takashi Masuoka, Eiji Hase, Yoshiaki Nakajima, Yoshihisa Yamaoka, Kaoru Minoshima, Takeshi Yasui

Proceedings Volume 10064, 100645C (2017) https://doi.org/10.1117/12.2250792

KEYWORDS: Ultrasonography, Tissue optics, Sensors, Frequency combs, Spatial resolution, Fiber optics sensors, Deep tissue imaging, Biology, Medicine, Laser beam propagation, Acoustics, Transducers, Signal detection, Biomedical optics, Radio optics

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Proceedings Article | 22 June 2015 Paper

Ultra-precision optical metrology using highly controlled fiber-based frequency combs

Kaoru Minoshima, Yoshiaki Nakajima, Guanhao Wu

Proceedings Volume 9525, 952502 (2015) https://doi.org/10.1117/12.2191131

KEYWORDS: Frequency combs, Refractive index, Interferometers, Interferometry, Distance measurement, Fiber lasers, Bragg cells, Metrology, Optical testing, Mode locking

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Proceedings Article | 20 November 2003 Paper

High-precision long-distance measurement using a frequency comb of a femtosecond mode-locked laser

Hirokazu Matsumoto, Kaoru Minoshima, Souichi Telada

Proceedings Volume 5190, (2003) https://doi.org/10.1117/12.505422

KEYWORDS: Distance measurement, Mode locking, Femtosecond phenomena, Phase measurement, Frequency combs, Modulation, Signal detection, Absorption, Calibration

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Proceedings Article | 3 May 2001 Paper

Frequency control of a chirped-mirror-dispersion-controlled mode-locked Ti:Al2O3 laser for comparison between microwave and optical frequencies

Kazuhiko Sugiyama, Atsushi Onae, Takeshi Ikegami, Sergey Slyusarev, Feng-Lei Hong, Kaoru Minoshima, Hirokazu Matsumoto, Jonathan Knight, William Wadsworth, Philip Russell

Proceedings Volume 4269, (2001) https://doi.org/10.1117/12.424458

KEYWORDS: Mode locking, Laser stabilization, Fiber lasers, Microwave radiation, Crystals, Nd:YAG lasers, Frequency combs, Cesium, Iodine cells, Mirrors

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Proceedings Article | 11 November 1999 Paper

Simplified spectral imaging using a pair of CCD's with filters for shape measurement

Xiaoli Dai, Kaoru Minoshima, Katuo Seta

Proceedings Volume 3782, (1999) https://doi.org/10.1117/12.369199

KEYWORDS: Charge-coupled devices, Image filtering, Image processing, Optical filters, Imaging spectroscopy, Spectral resolution, Signal detection, Camera shutters, Calibration, Femtosecond phenomena

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SPIE Journal Paper | 1 October 1999

Three-dimensional imaging using a femtosecond amplifying optical Kerr gate

Kaoru Minoshima, Takeshi Yasui, Emmanuel Abraham, Hirokazu Matsumoto, Gediminas Jonusauskas, Claude Rulliere

OE, Vol. 38, Issue 10, (October 1999) https://doi.org/10.1117/12.10.1117/1.602229

KEYWORDS: Femtosecond phenomena, 3D image processing, Picosecond phenomena, Ultrafast imaging, Transient nonlinear optics, Imaging spectroscopy, Diffusers, Spectroscopy, Optical filters, Stereoscopy

Proceedings Article | 4 December 1998 Paper

Three-dimensional imaging using a femtosecond amplifying optical Kerr gate

Kaoru Minoshima, Takeshi Yasui, Emmanuel Abraham, Hirokazu Matsumoto, Gediminas Jonusauskas, Claude Rulliere

Proceedings Volume 3491, (1998) https://doi.org/10.1117/12.328687

KEYWORDS: Femtosecond phenomena, 3D image processing, Picosecond phenomena, Transient nonlinear optics, Ultrafast imaging, Optical filters, Spectroscopy, Stereoscopy, Diffusers, Imaging spectroscopy

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Proceedings Article | 2 June 1994 Paper

Ultrafast nonlinear optical properties of J-aggregates and new preparation method of oriented films at room temperature

Kazuhiko Misawa, Kaoru Minoshima, Hiroshi Ono, Makoto Taiji, Takayoshi Kobayashi

Proceedings Volume 2144, (1994) https://doi.org/10.1117/12.177223

KEYWORDS: Absorption, Excitons, Polarization, Molecules, Dichroic materials, Absorbance, Femtosecond phenomena, Spectroscopy, Picosecond phenomena, Molecular aggregates

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Showing 5 of 18 publications

Conference Committee Involvement (2)

LASE

25 January 2025 | San Francisco, United States

Optical Measurement Systems for Industrial Inspection IX

22 June 2015 | Munich, Germany

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