Prof. Toshihiko Baba Profile

Prof. Toshihiko Baba

at Yokohama National Univ

SPIE Involvement:

Conference Program Committee | Author

Publications (40)

Proceedings Article | 13 March 2024 Presentation

On-chip LiDAR sensor with slow-light scanner and swept laser source

Toshihiko Baba

Proceedings Volume PC12912, PC1291214 (2024) https://doi.org/10.1117/12.3011725

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Proceedings Article | 14 April 2020 Presentation + Paper

Front induced transitions: refractive index fronts in dispersive waveguides

Mahmoud Gaafar, Hagen Renner, Toshihiko Baba, Manfred Eich, Alexander Yu. Petrov

Proceedings Volume 11358, 113581H (2020) https://doi.org/10.1117/12.2555751

KEYWORDS: Dispersion, Waveguides, Refractive index, Wave propagation, Photonics, Modulation

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Proceedings Article | 25 February 2020 Paper

Front induced transitions in slow light and dispersive waveguides

Mahmoud A. Gaafar, Toshihiko Baba, Manfred Eich, Alexander Yu. Petrov

Proceedings Volume 11296, 112962O (2020) https://doi.org/10.1117/12.2540476

KEYWORDS: Dispersion, Waveguides, Wave propagation, Refractive index, Photonics, Slow light, Dielectrics, Modulation, Switching, Photonic crystals

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Proceedings Article | 8 March 2019 Presentation

Iontronic sensing using photonic crystal nanolasers (Conference Presentation)

Toshihiko Baba

Proceedings Volume 10927, 109271S (2019) https://doi.org/10.1117/12.2515982

KEYWORDS: Photonic crystals, Semiconductor lasers, Liquids, Ions, Biosensing, Proteins, Alzheimer's disease, Laser engineering

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Proceedings Article | 4 March 2019 Presentation + Paper

Enhanced light emission from a Si photonics beam steering device consisting of asymmetric photonic crystal waveguide

Hiroyuki Ito, Yuma Kusunoki, Daichi Akiyama, Ryo Tetsuya, Hiroshi Abe, Toshihiko Baba

Proceedings Volume 10923, 1092313 (2019) https://doi.org/10.1117/12.2508297

KEYWORDS: Beam steering, Silicon, Silicon photonics, Photonics, Waveguides, Slow light, Photonic crystals, LIDAR, Switching, Diffraction gratings

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Proceedings Article | 4 March 2019 Paper

Efficient light emission and beam forming in Si photonic crystal beam steering device and its phased array configuration

Ryo Tetsuya, Hiroshi Abe, Hiroyuki Ito, Goro Takeuchi, Yuya Furukado, Toshihiko Baba

Proceedings Volume 10922, 109221W (2019) https://doi.org/10.1117/12.2509224

KEYWORDS: Silicon, Waveguides, Beam steering, LIDAR, Silicon photonics, Phase matching, Photonic crystals, Slow light, Optical antennas, Phased array optics

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Proceedings Article | 4 March 2019 Paper

50-Gbps Si photonic crystal slow light modulator by the electro-optic phase matching

Yosuke Hinakura, Hiroyuki Arai, Toshihiko Baba

Proceedings Volume 10923, 109231A (2019) https://doi.org/10.1117/12.2509227

KEYWORDS: Electrodes, Modulators, Silicon, Silicon photonics, Photonic crystals, Modulation, Slow light, Electro optics

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Proceedings Article | 23 March 2018 Paper

Two-dimensional beam steering device using double periodic Si photonic crystal waveguide

Hiroshi Abe, Moe Takeuchi, Goro Takeuchi, Hiroyuki Ito, Tomoki Yokokawa, Keisuke Kondo, Yuya Furukado, Toshihiko Baba

Proceedings Volume 10541, 105410P (2018) https://doi.org/10.1117/12.2290954

KEYWORDS: Waveguides, Beam steering, Silicon, Slow light, Silicon photonics, Photonic crystals, Dispersion, LIDAR, Phased array optics, Collimation

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Proceedings Article | 14 March 2018 Open Access

Photonic crystal nanolaser biosensors (Conference Presentation)

Toshihiko Baba

Proceedings Volume 10540, 105400D (2018) https://doi.org/10.1117/12.2288856

KEYWORDS: Sensors, Photonic crystals, Environmental sensing, Biosensors, Biosensing, Semiconductors, Photodetectors, Ions, Plasma, Adsorption

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Proceedings Article | 23 February 2018 Presentation + Paper

Thermally controlled Si photonic crystal waveguide slow light beam steering device

Goro Takeuchi, Yosuke Terada, Moe Takeuchi, Hiroshi Abe, Hiroyuki Ito, Toshihiko Baba

Proceedings Volume 10535, 105351O (2018) https://doi.org/10.1117/12.2289419

KEYWORDS: Silicon, Beam steering, Waveguides, Tin, Slow light, Photonic crystals, Silicon photonics, LIDAR, Phased array optics, Thermal optics

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Proceedings Article | 22 February 2018 Presentation + Paper

Experimental simulation of ranging action using Si photonic crystal modulator and optical antenna

Yuya Furukado, Hiroshi Abe, Yosuke Hinakura, Toshihiko Baba

Proceedings Volume 10539, 1053905 (2018) https://doi.org/10.1117/12.2289414

KEYWORDS: Optical antennas, Silicon, Silicon photonics, Photonic crystals, Ranging, Modulation, Modulators, LIDAR, Waveguides, Beam steering

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Proceedings Article | 20 February 2018 Paper

Investigation of ultrahigh sensitivity in GaInAsP nanolaser biosensor

Yoshito Saijo, Takumi Watanabe, Yu Hasegawa, Yoshiaki Nishijima, Toshihiko Baba

Proceedings Volume 10510, 105100C (2018) https://doi.org/10.1117/12.2289408

KEYWORDS: Proteins, Semiconductors, Biosensors, Adsorption, Sensors, Refractive index, Ions, Molecules, N-type semiconductors, Semiconducting wafers

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Proceedings Article | 28 April 2017 Presentation

Advanced slow-light modulators (Conference Presentation)

Toshihiko Baba

Proceedings Volume 10119, 101191M (2017) https://doi.org/10.1117/12.2261140

KEYWORDS: Modulators, Slow light, Photonic crystals, Waveguides, Phase shifts, Silicon, Cladding, Resistance, Semiconducting wafers, Modulation

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Proceedings Article | 7 March 2016 Paper

Co- and counter-propagating slow light systems

T. Baba, K. Kondo

Proceedings Volume 9763, 97631C (2016) https://doi.org/10.1117/12.2220223

KEYWORDS: Slow light, Photonic crystals, Waveguides, Doppler effect, Silicon photonics, Picosecond phenomena, Mirrors, Dispersion, Silicon, Wave propagation, Absorption

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Proceedings Article | 11 September 2013 Paper

Slow light tuning in photonic crystals

Toshihiko Baba

Proceedings Volume 8808, 88081A (2013) https://doi.org/10.1117/12.2023555

KEYWORDS: Slow light, Waveguides, Dispersion, Picosecond phenomena, Silicon, Photonic crystals, Modulators, Optical correlators, Phase shifts, Receivers

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Proceedings Article | 6 March 2013 Paper

Nonlinearity induced ultrafast slow-light tuning in photonic crystal waveguide

Keisuke Kondo, Mizuki Shinkawa, Yohei Hamachi, Yuji Saito, Yoshiki Arita, Toshihiko Baba

Proceedings Volume 8636, 86360Z (2013) https://doi.org/10.1117/12.2003760

KEYWORDS: Picosecond phenomena, Slow light, Waveguides, Photonic crystals, Ultrafast phenomena, Silicon, Plasma, Dispersion, Polarization, Modulation

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Proceedings Article | 6 March 2013 Paper

Electrically controlled photonic crystal slow light device and its application to optical correlator

Norihiro Ishikura, Ryo Hayakawa, Ryo Hosoi, Mizuki Shinkawa, Hong Nguyen, Naoya Yazawa, Toshihiko Baba

Proceedings Volume 8636, 86360X (2013) https://doi.org/10.1117/12.2003624

KEYWORDS: Picosecond phenomena, Slow light, Dispersion, Optical correlators, Photonic crystals, Waveguides, Silicon, Scanners, Temperature metrology, Optical fibers

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Proceedings Article | 27 February 2013 Paper

Compact optical modulators with Si photonic crystals

T. Baba, Hong Nguyen

Proceedings Volume 8630, 86300C (2013) https://doi.org/10.1117/12.2002909

KEYWORDS: Eye, Silicon, Modulation, Electrodes, Photonic crystals, Modulators, Waveguides, Phase shift keying, Optical modulators, Thermal optics

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Proceedings Article | 19 February 2013 Paper

Selective detection of sub-atto-molar streptavidin in 10^13 fold impure sample using nanoslot photonic crystal nanolaser

Shoji Hachuda, Shota Otsuka, Toshinari Isono, Keisuke Watanabe, Toshihiko Baba

Proceedings Volume 8594, 85940G (2013) https://doi.org/10.1117/12.2003834

KEYWORDS: Adsorption, Photonic crystals, Diagnostics, Sensors, Measurement devices, Target detection, Blood, Proteins, Modes of laser operation, Point-of-care devices

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Proceedings Article | 19 February 2013 Paper

Label-free imaging of live cell using large-scale photonic crystal nanolaser array

Hiroshi Abe, Michimasa Narimatsu, Shota Kita, Kosuke Nakamura, Satoshi Ota, Yasushi Takemura, Toshihiko Baba

Proceedings Volume 8594, 859404 (2013) https://doi.org/10.1117/12.2003806

KEYWORDS: Photonic crystals, Live cell imaging, Silica, Glasses, Microscopes, Imaging arrays, Optical microscopes, Scanning electron microscopy, Proteins, Semiconducting wafers

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Proceedings Article | 8 February 2012 Paper

Recent progress in on-chip slow light devices

Toshihiko Baba

Proceedings Volume 8273, 827319 (2012) https://doi.org/10.1117/12.914747

KEYWORDS: Silicon, Slow light, Picosecond phenomena, Waveguides, Receivers, Modulators, Eye, Photonics, Modulation, Photonic crystals

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Proceedings Article | 12 September 2011 Paper

Photonic crystal nanolasers with nanoslot structure for sensing applications

T. Baba, S. Kita, H. Abe, S. Hachuda, M. Narimatsu, S. Otsuka, K. Nozaki

Proceedings Volume 8095, 80950X (2011) https://doi.org/10.1117/12.893577

KEYWORDS: Sensors, Adsorption, Proteins, Biosensing, Photonic crystals, Modes of laser operation, Liquids, Silicon, Structural sensing, Biological research

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Proceedings Article | 10 February 2011 Paper

Nonlinear enhancement in photonic crystal waveguides with spot-size converter

M. Shinkawa, N. Ishikura, Y. Hama, T. Baba

Proceedings Volume 7949, 794902 (2011) https://doi.org/10.1117/12.876076

KEYWORDS: Slow light, Waveguides, Silicon, Photonic crystals, Scanning probe microscopy, Modulation, Dispersion, Four wave mixing, Absorption, Nonlinear optics

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Proceedings Article | 12 February 2010 Paper

Fast optical correlator via thermal delay tuning in photonic crystal coupled waveguide

Norihiro Ishikura, Jun Adachi, Toshihiko Baba

Proceedings Volume 7612, 76120O (2010) https://doi.org/10.1117/12.842826

KEYWORDS: Slow light, Picosecond phenomena, Waveguides, Dispersion, Optical correlators, Photonic crystals, Silicon, Optical amplifiers, Finite-difference time-domain method, Associative arrays

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Proceedings Article | 3 February 2009 Paper

Dispersion-free slow light pulse and its functionalities

T. Baba, H. Sasaki, J. Adachi, T. Kawasaki, D. Mori

Proceedings Volume 7226, 722604 (2009) https://doi.org/10.1117/12.816332

KEYWORDS: Slow light, Dispersion, Picosecond phenomena, Waveguides, Photonic crystals, Modulation, Phase shifts, Finite-difference time-domain method, Phase measurement, Free space optics

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Proceedings Article | 6 October 2006 Paper

Clear focusing of light in photonic crystal superlens

Kunsun Eom, Takashi Matsumoto, Toshihiko Baba

Proceedings Volume 6352, 635212 (2006) https://doi.org/10.1117/12.688653

KEYWORDS: Waveguides, Photonic crystals, Silicon, Dispersion, Light, Light scattering, Ray tracing, Reflection, Diffraction, Image acquisition

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Proceedings Article | 5 October 2006 Paper

External control of guided resonance in photonic crystal slab by changing the index anisotropy of liquid crystal

Naoko Inoue, Toshihiko Baba

Proceedings Volume 6352, 63520R (2006) https://doi.org/10.1117/12.691209

KEYWORDS: Polarization, Liquid crystals, Photonic crystals, Anisotropy, Birefringence, Optical filters, Control systems, Glasses, Scanning electron microscopy, Plasma etching

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Proceedings Article | 5 October 2006 Paper

Sidelobe reduction in Si photonic wire AWG

Kosuke Sasaki, Fumiaki Ohno, Ayumu Motegi, Toshihiko Baba

Proceedings Volume 6352, 635205 (2006) https://doi.org/10.1117/12.690948

KEYWORDS: Waveguides, Silicon, Light scattering, Finite-difference time-domain method, Scattering, Gaussian beams, Silicon photonics, Diffraction, Laser scattering, Phase measurement

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Proceedings Article | 5 October 2006 Paper

Active/passive integrated photonic crystal slab μ-laser

H. Watanabe, T. Baba

Proceedings Volume 6352, 635208 (2006) https://doi.org/10.1117/12.687252

KEYWORDS: Waveguides, Photonic crystals, Metalorganic chemical vapor deposition, Waveguide lasers, Integrated photonics, Crystals, Fabrication, External quantum efficiency, Photonic integrated circuits, Absorption

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Proceedings Article | 4 October 2006 Paper

Potential of slowlight in photonic crystal

Toshihiko Baba, Daisuke Mori

Proceedings Volume 6351, 63511Z (2006) https://doi.org/10.1117/12.690817

KEYWORDS: Slow light, Waveguides, Dispersion, Light wave propagation, Refractive index, Geometrical optics, Photonic crystals, Absorption, Convolution, Solids

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Proceedings Article | 28 April 2005 Paper

Full 3D FDTD analysis of modal characteristics in VCSELs with holey structure

Kosuke Morito, Daisuke Mori, Eichi Mizuta, Toshihiko Baba

Proceedings Volume 5722, (2005) https://doi.org/10.1117/12.601955

KEYWORDS: Vertical cavity surface emitting lasers, 3D modeling, Oxides, Scattering, Finite-difference time-domain method, Thermal effects, Refractive index, Light scattering, Photonic crystals, Absorbance

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Proceedings Article | 28 April 2005 Paper

Carrier and photon analyses of photonic crystal microlasers

Kengo Nozaki, Toshihiko Baba

Proceedings Volume 5722, (2005) https://doi.org/10.1117/12.601952

KEYWORDS: Photonic crystals, Finite-difference time-domain method, Hole burning spectroscopy, Diffusion, Optical microcavities, Laser damage threshold, Photonic microstructures, Laser crystals, Modes of laser operation, Semiconductors

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Proceedings Article | 28 April 2005 Paper

High-power single-transverse-mode holey VCSELs

Akio Furukawa, Mitsunari Hoshi, Satoshi Sasaki, Atsushi Matsuzono, Kosuke Moritoh, Toshihiko Baba

Proceedings Volume 5722, (2005) https://doi.org/10.1117/12.601954

KEYWORDS: Vertical cavity surface emitting lasers, Oxides, Near field, Gallium arsenide, Semiconducting wafers, Gallium, Optical alignment, Data communications, Photomicroscopy, Cladding

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Proceedings Article | 1 April 2005 Paper

Microdisk lasers: quantum dot lasing and bistability

Toshihiko Baba, T. Ide, S. Ishii, A. Nakagawa, Jun Tatebayashi, Satoshi Iwamoto, Toshihiro Nakaoka, Yausuhiko Arakawa

Proceedings Volume 5738, (2005) https://doi.org/10.1117/12.597126

KEYWORDS: Molecular photonics, Molecules, Bistability, Indium gallium arsenide, Absorption, Semiconductor lasers, Switching, Single photon, Saturable absorption, Quantum dots

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Proceedings Article | 8 October 2004 Paper

Si photonic wire waveguides

Toshihiko Baba

Proceedings Volume 5515, (2004) https://doi.org/10.1117/12.559215

KEYWORDS: Waveguides, Silicon, Polarization, Silicon photonics, Wave propagation, Diffraction, Geometrical optics, Optical filters, Finite-difference time-domain method, Light wave propagation

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Proceedings Article | 9 July 2004 Paper

Light propagation in photonic crystal superprisms

Toshihiko Baba, Takashi Matsumoto

Proceedings Volume 5360, (2004) https://doi.org/10.1117/12.530811

KEYWORDS: Prisms, Dispersion, Photonic crystals, Beam propagation method, Finite-difference time-domain method, Collimation, Light wave propagation, Optical filters, Free space, Wave propagation

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Proceedings Article | 18 June 2004 Paper

Si photonic wire components and microfilters on SOI substrate

Tatsuhiko Fukazawa, Fumiaki Ohno, Toshihiko Baba

Proceedings Volume 5349, (2004) https://doi.org/10.1117/12.540317

KEYWORDS: Waveguides, Silicon, Silicon photonics, Signal attenuation, Optical circuits, Silica, Finite-difference time-domain method, Polarization, Scanning electron microscopy, Integrated optics

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Proceedings Article | 9 July 2003 Paper

Microlasers based on photonic crystal concept

Toshihiko Baba, K. Inoshita, D. Sano, A. Nakagawa, K. Nozaki

Proceedings Volume 5000, (2003) https://doi.org/10.1117/12.480056

KEYWORDS: Photonic crystals, Molecular photonics, Laser crystals, Molecules, Quantum wells, Laser damage threshold, Finite-difference time-domain method, Continuous wave operation, Composites

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Proceedings Article | 11 July 2002 Paper

Light transmission in photonic bandgap waveguides and photonic band crystals

Toshihiko Baba

Proceedings Volume 4870, (2002) https://doi.org/10.1117/12.475543

KEYWORDS: Waveguides, Photonic crystals, Interfaces, Scattering, Finite-difference time-domain method, Light scattering, Light wave propagation, Silicon, Dispersion, Crystals

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Proceedings Article | 9 July 2001 Paper

Sharply bent optical waveguide silicon-on-insulator substrate

Atsushi Sakai, Hara Go, Toshihiko Baba

Proceedings Volume 4283, (2001) https://doi.org/10.1117/12.432614

KEYWORDS: Waveguides, Silicon, Light wave propagation, Scattering, Finite-difference time-domain method, Reflectivity, Etching, Light scattering, Wave propagation, Fabry–Perot interferometers

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Showing 5 of 40 publications

Conference Committee Involvement (24)

Physics and Simulation of Optoelectronic Devices XXXIII

28 January 2025 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXXII

30 January 2024 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXXI

31 January 2023 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXX

24 January 2022 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXIX

6 March 2021 | Online Only, California, United States

Physics and Simulation of Optoelectronic Devices XXVIII

3 February 2020 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXVII

5 February 2019 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXVI

29 January 2018 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXV

30 January 2017 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXIV

15 February 2016 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXIII

9 February 2015 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXII

3 February 2014 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXI

4 February 2013 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XX

23 January 2012 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XIX

24 January 2011 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XVIII

25 January 2010 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XVII

26 January 2009 | San Jose, California, United States

Physics and Simulation of Optoelectronic Devices XVI

21 January 2008 | San Jose, California, United States

Physics and Simulation of Optoelectronic Devices XV

22 January 2007 | San Jose, California, United States

Optoelectronic Materials and Devices

5 September 2006 | Gwangju, South Korea

Physics and Simulation of Optoelectronic Devices XIV

22 January 2006 | San Jose, California, United States

Physics and Simulation of Optoelectronic Devices XIII

24 January 2005 | San Jose, California, United States

Physics and Simulation of Optoelectronic Devices XII

26 January 2004 | San Jose, CA, United States

Physics and Simulation of Optoelectronic Devices XI

27 January 2003 | San Jose, CA, United States

Showing 5 of 24 Conference Committees

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