Dr. Motoichi Ohtsu Profile

Dr. Motoichi Ohtsu

at Univ of Tokyo

SPIE Involvement:

Author

Publications (43)

Proceedings Article | 1 April 2013 Paper

Dressed-photon nanopolishing for extreme ultraviolet mask substrate defect mitigation

Ranganath Teki, Arun John Kadaksham, Frank Goodwin, Takashi Yatsui, Motoichi Ohtsu

Proceedings Volume 8679, 86790F (2013) https://doi.org/10.1117/12.2011260

KEYWORDS: Extreme ultraviolet, Polishing, Particles, Etching, Surface finishing, Chemical mechanical planarization, Photomasks, Inspection, Neodymium, Surface roughness

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Proceedings Article | 7 February 2011 Paper

Nanophotonic hierarchical hologram: hierarchical information processing and nanometric data retrieval based on nanophotonics

Naoya Tate, Makoto Naruse, Takashi Yatsui, Tadashi Kawazoe, Morihisa Hoga, Yasuyuki Ohyagi, Tokuhiro Fukuyama, Yoko Sekine, Mitsuru Kitamura, Motoichi Ohtsu

Proceedings Volume 7957, 79570M (2011) https://doi.org/10.1117/12.873535

KEYWORDS: Nanophotonics, Holograms, Near field optics, Polarization, Nano opto mechanical systems, Near field, Nanolithography, Data processing, Holography, Prototyping

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Proceedings Article | 26 February 2010 Paper

Nanophotonic fabrication in sub-nm scale

Takashi Yatsui, Motoichi Ohtsu

Proceedings Volume 7586, 75860D (2010) https://doi.org/10.1117/12.846328

KEYWORDS: Near field optics, Etching, Sputter deposition, Radium, Surface finishing, Near field, Polishing, Nanophotonics, Surface roughness, Silica

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SPIE Journal Paper | 1 October 2008 Open Access

Single-photon emitter using excitation energy transfer between quantum dots

Tadashi Kawazoe, Shunsuke Tanaka, Motoichi Ohtsu

JNP, Vol. 2, Issue 01, 029502, (October 2008) https://doi.org/10.1117/12.10.1117/1.3026554

KEYWORDS: Surface plasmons, Excitons, Energy transfer, Quantum dots, Quantum efficiency, Microchannel plates, Molecules, Near field optics, Optical fibers, Mode locking

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Proceedings Article | 28 August 2008 Paper

Hierarchical architectures based on optical near-field interactions

Naoya Tate, Wataru Nomura, Takashi Yatsui, Makoto Naruse, Motoichi Ohtsu

Proceedings Volume 7033, 703305 (2008) https://doi.org/10.1117/12.795674

KEYWORDS: Near field optics, Holograms, Nanophotonics, Nanolithography, Diffraction, Particles, Gold, Scanning electron microscopy, Nano opto mechanical systems, Diffraction gratings

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Proceedings Article | 26 August 2008 Paper

Unidirectional signal transfer in quantum-dot systems via optical near-field interactions

W. Nomura, T. Yatsui, T. Kawazoe, M. Naruse, N. Tate, M. Ohtsu

Proceedings Volume 7032, 703215 (2008) https://doi.org/10.1117/12.794380

KEYWORDS: Nanophotonics, Near field optics, Energy transfer, Excitons, Transmitters, Picosecond phenomena, Antimony, Photonic devices, Diffraction, Quantum dots

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Proceedings Article | 29 April 2008 Paper

Progress in developing nanophotonic integrated circuits

Takashi Yatsui, Gyu-Chul Yi, Motoichi Ohtsu

Proceedings Volume 7007, 700703 (2008) https://doi.org/10.1117/12.801925

KEYWORDS: Near field, Zinc oxide, Excitons, Quantum wells, Nanophotonics, Near field optics, Energy transfer, Time resolved spectroscopy, Picosecond phenomena, Nanorods

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SPIE Journal Paper | 1 December 2007

Exposure dependence of the developed depth in nonadiabatic photolithography using visible optical near fields

Tadashi Kawazoe, Motoichi Ohtsu, Yasuhisa Inao, Ryou Kuroda

JNP, Vol. 1, Issue 01, 011595, (December 2007) https://doi.org/10.1117/12.10.1117/1.2833587

KEYWORDS: Photoresist materials, Optical lithography, Near field optics, Near field, Photomasks, Finite-difference time-domain method, Lamps, Light sources, Atomic force microscopy, Chromium

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SPIE Journal Paper | 1 November 2007

Observation of dissipated optical energy transfer between CdSe quantum dots

Wataru Nomura, Takashi Yatsui, Tadashi Kawazoe, Motoichi Ohtsu

JNP, Vol. 1, Issue 01, 011591, (November 2007) https://doi.org/10.1117/12.10.1117/1.2817657

KEYWORDS: Energy transfer, Excitons, Quantum dots, Near field optics, Nanophotonics, Picosecond phenomena, Time resolved spectroscopy, Photography, Luminescence, Spectroscopes

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Proceedings Article | 28 September 2007 Paper

Hierarchy and energy dissipation in optical near-fields and their system applications

Makoto Naruse, Motoichi Ohtsu

Proceedings Volume 6642, 66420N (2007) https://doi.org/10.1117/12.730677

KEYWORDS: Near field optics, Particles, Resistance, Quantum dots, Metals, Information security, Signal processing, Nanoparticles, Excitons, Spatial frequencies

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Proceedings Article | 10 September 2007 Paper

Progress in developing nanophotonic devices driven by an optical near-field

Takashi Yatsui, Gyu-Chul Yi, Motoichi Ohtsu

Proceedings Volume 6779, 677906 (2007) https://doi.org/10.1117/12.731932

KEYWORDS: Quantum wells, Zinc oxide, Near field, Nanophotonics, Excitons, Near field optics, Switching, Energy transfer, Picosecond phenomena, Nanorods

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SPIE Journal Paper | 1 September 2007

Metallized slit-shaped pyramidal Si probe with extremely high resolution for 1.5-Tbit/in2 density near-field optical storage

Takashi Yatsui, Wataru Nomura, Motoichi Ohtsu

JNP, Vol. 1, Issue 01, 011550, (September 2007) https://doi.org/10.1117/12.10.1117/1.2794357

KEYWORDS: Silicon, Near field, Near field optics, Polarization, Luminescence, Molecules, Optical storage, Aluminum, Mass attenuation coefficient, Finite-difference time-domain method

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SPIE Journal Paper | 1 September 2007

Near-field components and evaluation of photoluminescence in silicon nanostructures

Takashi Yatsui, Tadashi Kawazoe, Kiyoshi Kobayashi, Motoichi Ohtsu

JNP, Vol. 1, Issue 01, 011570, (September 2007) https://doi.org/10.1117/12.10.1117/1.2794355

KEYWORDS: Silicon, Nanocrystals, Near field, Luminescence, Near field optics, Nanostructures, Optical spectroscopy, Near field scanning optical microscopy, Visible radiation, Nanophotonics

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SPIE Journal Paper | 1 September 2007

Nanophotonics in Japan

Motoichi Ohtsu

JNP, Vol. 1, Issue 01, 011590, (September 2007) https://doi.org/10.1117/12.10.1117/1.2794353

KEYWORDS: Near field optics, Nanophotonics, Near field, Particles, Quantum dots, Molecules, Chemical species, Excitons, Waveguides, Photonic devices

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SPIE Journal Paper | 1 January 2007 Open Access

Guest Editorial: Nanophotonics in Japan

Motoichi Ohtsu, Makoto Naruse

JNP, Vol. 1, Issue 01, 011599, (January 2007) https://doi.org/10.1117/12.10.1117/1.2794352

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Proceedings Article | 30 August 2006 Paper

Plasmonic circuits for nanophotonic devices

Takashi Yatsui, Makoto Naruse, Motoichi Ohtsu

Proceedings Volume 6323, 63230O (2006) https://doi.org/10.1117/12.680108

KEYWORDS: Near field optics, Nanophotonics, Waveguides, Plasmons, Nanoparticles, Near field, Silicon, Wave propagation, Metals, Surface plasmons

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Proceedings Article | 25 October 2005 Paper

Photoluminescent characteristics of ZnO nanorods and ZnO/ZnMgO nanorod heterostructures

Gyu-Chul Yi, Won Park, Jinkyoung Yoo, Dong-Wook Kim, Taiha Joo, T. Yatsui, J. Lim, M. Ohtsu

Proceedings Volume 6013, 601301 (2005) https://doi.org/10.1117/12.631517

KEYWORDS: Zinc oxide, Magnesium, Quantum wells, Picosecond phenomena, Heterojunctions, Excitons, Metalorganic chemical vapor deposition, Zinc, Near field scanning optical microscopy, Nanorods

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Proceedings Article | 25 October 2005 Paper

From optical near-field interaction to nanophotonic information systems

Makoto Naruse, Tetsuya Miyazaki, Tadashi Kawazoe, Takashi Yatsui, Suguru Sangu, Kiyoshi Kobayashi, Motoichi Ohtsu

Proceedings Volume 6017, 601701 (2005) https://doi.org/10.1117/12.632748

KEYWORDS: Near field optics, Nanophotonics, Near field, Quantum dots, Excitons, Particles, Diffraction, Telecommunications, Content addressable memory, Computer architecture

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Proceedings Article | 26 August 2005 Paper

Efficient energy transfer of a nanodot coupler with resonant light scattering of metallic nanoparticles

Wataru Nomura, Takashi Yatsui, Motoichi Ohtsu

Proceedings Volume 5927, 59270B (2005) https://doi.org/10.1117/12.614308

KEYWORDS: Gold, Nanoparticles, Near field optics, Near field, Energy transfer, Nanophotonics, Waveguides, Nano opto mechanical systems, Plasmons, Light scattering

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Proceedings Article | 26 August 2005 Paper

Size- and position-controlled nanoscale fabrication for nanophotonic devices

Takashi Yatsui, Wataru Nomura, Motoichi Ohtsu

Proceedings Volume 5927, 59270Q (2005) https://doi.org/10.1117/12.614259

KEYWORDS: Silicon, Nanoparticles, Gold, Latex, Polarization, Near field optics, Scanning electron microscopy, Nanophotonics, Particles, Capillaries

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Proceedings Article | 15 July 2004 Paper

Adiabatic and nonadiabatic nanofabrication by localized optical near fields

Tadashi Kawazoe, Motoichi Ohtsu

Proceedings Volume 5339, (2004) https://doi.org/10.1117/12.533245

KEYWORDS: Near field optics, Zinc, Near field, Chemical vapor deposition, Polaritons, Molecules, Photoresist materials, Optical lithography, Electroluminescence, Excitons

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Proceedings Article | 8 May 2001 Paper

Nanotechnology and nano/atom photonics by optical near field

Motoichi Ohtsu

Proceedings Volume 4416, (2001) https://doi.org/10.1117/12.427021

KEYWORDS: Near field optics, Nanophotonics, Zinc, Silicon, Zinc oxide, Aluminum, Photonics, Switching, Nanolithography, Nanostructures

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Proceedings Article | 3 May 2001 Paper

Past, present, and future of optical comb generation

Motonobu Kourogi, Motoichi Ohtsu

Proceedings Volume 4269, (2001) https://doi.org/10.1117/12.424487

KEYWORDS: Modulation, Mode locking, Optical fibers, Terahertz radiation, Modulators, Signal to noise ratio, Second-harmonic generation, Dispersion, Frequency combs, Scanning probe microscopy

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