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Shiyoshi Yokoyama
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Journal Articles

Heterogeneous silicon-on-lithium niobate electro-optic modulator for 100-Gbaud modulation

Open Access
Jiawei Mao, Hiromu Sato, Guo-Wei Lu, Shiyoshi Yokoyama
Journal: APL Photonics
APL Photonics 7, 126103 (2022)
https://doi.org/10.1063/5.0109251
Published: December 2022
View articletitled, Heterogeneous silicon-on-lithium niobate electro-optic modulator for 100-Gbaud modulation
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Journal Articles

An electro-optic polymer-cladded TiO2 waveguide modulator

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Feng Qiu, Hiroki Miura, Andrew M. Spring, Jianxun Hong, Daisuke Maeda, Masa-aki Ozawa, Keisuke Odoi, Shiyoshi Yokoyama
Journal: Applied Physics Letters
Appl. Phys. Lett. 109, 173301 (2016)
https://doi.org/10.1063/1.4966272
Published: October 2016
View articletitled, An electro-optic polymer-cladded TiO2 waveguide modulator
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Journal Articles

Ultra-thin silicon/electro-optic polymer hybrid waveguide modulators

Free
Feng Qiu, Hiromu Sato, Andrew M. Spring, Daisuke Maeda, Masa-aki Ozawa, Keisuke Odoi, Isao Aoki, Akira Otomo, Shiyoshi Yokoyama
Journal: Applied Physics Letters
Appl. Phys. Lett. 107, 123302 (2015)
https://doi.org/10.1063/1.4931490
Published: September 2015
View articletitled, Ultra-thin silicon/electro-optic polymer hybrid waveguide modulators
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Journal Articles

A straightforward electro-optic polymer covered titanium dioxide strip line modulator with a low driving voltage

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Feng Qiu, Andrew M. Spring, Daisuke Maeda, Masa-aki Ozawa, Keisuke Odoi, Isao Aoki, Akira Otomo, Shiyoshi Yokoyama
Journal: Applied Physics Letters
Appl. Phys. Lett. 105, 073305 (2014)
https://doi.org/10.1063/1.4893925
Published: August 2014
View articletitled, A straightforward electro-optic polymer covered titanium dioxide strip line modulator with a low driving voltage
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Journal Articles

Thin TiO2 core and electro-optic polymer cladding waveguide modulators

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Feng Qiu, Andrew M. Spring, Feng Yu, Isao Aoki, Akira Otomo, Shiyoshi Yokoyama
Journal: Applied Physics Letters
Appl. Phys. Lett. 102, 233504 (2013)
https://doi.org/10.1063/1.4809818
Published: June 2013
View articletitled, Thin TiO2 core and electro-optic polymer cladding waveguide modulators
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Journal Articles

Complementary metal–oxide–semiconductor compatible athermal silicon nitride/titanium dioxide hybrid micro-ring resonators

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Feng Qiu, Andrew M. Spring, Feng Yu, Shiyoshi Yokoyama
Journal: Applied Physics Letters
Appl. Phys. Lett. 102, 051106 (2013)
https://doi.org/10.1063/1.4790440
Published: February 2013
View articletitled, Complementary metal–oxide–semiconductor compatible athermal silicon nitride/titanium dioxide hybrid micro-ring resonators
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Journal Articles

Nonlinear behavior of photoluminescence from silicon particles under two-photon excitation

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Xingsheng Xu, Shiyoshi Yokoyama
Journal: Applied Physics Letters
Appl. Phys. Lett. 99, 251105 (2011)
https://doi.org/10.1063/1.3665042
Published: December 2011
View articletitled, Nonlinear behavior of photoluminescence from silicon particles under two-photon excitation
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Journal Articles

Enhancement of two-photon excited fluorescence in two-dimensional nonlinear optical polymer photonic crystal waveguides

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Shin-ichiro Inoue, Shiyoshi Yokoyama
Journal: Applied Physics Letters
Appl. Phys. Lett. 93, 111110 (2008)
https://doi.org/10.1063/1.2985902
Published: September 2008
View articletitled, Enhancement of two-photon excited fluorescence in two-dimensional nonlinear optical polymer photonic crystal waveguides
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Journal Articles

Layer-by-layer growth of porphyrin supramolecular thin films

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Fumitaka Nishiyama, Takashi Yokoyama, Toshiya Kamikado, Shiyoshi Yokoyama, Shinro Mashiko
Journal: Applied Physics Letters
Appl. Phys. Lett. 88, 253113 (2006)
https://doi.org/10.1063/1.2216036
Published: June 2006
View articletitled, Layer-by-layer growth of porphyrin supramolecular thin films
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Journal Articles

Photonic crystal templates for organic solid-state lasers

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Shiyoshi Yokoyama, Tatsuo Nakahama, Shinro Mashiko, Masashi Nakao, Motohiro Yamada, Kazuyuki Nishio, Hideki Masuda
Journal: Applied Physics Letters
Appl. Phys. Lett. 87, 191101 (2005)
https://doi.org/10.1063/1.2119428
Published: October 2005
View articletitled, Photonic crystal templates for organic solid-state lasers
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Journal Articles

Conformation selective assembly of carboxyphenyl substituted porphyrins on Au (111)

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Takashi Yokoyama, Toshiya Kamikado, Shiyoshi Yokoyama, Shinro Mashiko
Journal: The Journal of Chemical Physics
J. Chem. Phys. 121, 11993–11997 (2004)
https://doi.org/10.1063/1.1819877
Published: December 2004
View articletitled, Conformation selective assembly of carboxyphenyl substituted porphyrins on Au (111)
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Journal Articles

Phototunable photonic bandgap in a chiral liquid crystal laser device

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Seiichi Furumi, Shiyoshi Yokoyama, Akira Otomo, Shinro Mashiko
Journal: Applied Physics Letters
Appl. Phys. Lett. 84, 2491–2493 (2004)
https://doi.org/10.1063/1.1699445
Published: April 2004
View articletitled, Phototunable photonic bandgap in a chiral liquid crystal laser device
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Journal Articles

Two-photon-induced polymerization in a laser gain medium for optical microstructure

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Shiyoshi Yokoyama, Tatsuo Nakahama, Hideki Miki, Shinro Mashiko
Journal: Applied Physics Letters
Appl. Phys. Lett. 82, 3221–3223 (2003)
https://doi.org/10.1063/1.1573350
Published: May 2003
View articletitled, Two-photon-induced polymerization in a laser gain medium for optical microstructure
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Journal Articles

Electrical control of the structure and lasing in chiral photonic band-gap liquid crystals

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Seiichi Furumi, Shiyoshi Yokoyama, Akira Otomo, Shinro Mashiko
Journal: Applied Physics Letters
Appl. Phys. Lett. 82, 16–18 (2003)
https://doi.org/10.1063/1.1534613
Published: January 2003
View articletitled, Electrical control of the structure and lasing in chiral photonic band-gap liquid crystals
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Journal Articles

Strong coupling of the single excitations in the Q-like bands of phenylene-linked free-base and zinc bacteriochlorin dimers: A time-dependent density functional theory study

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Yoichi Yamaguchi, Shiyoshi Yokoyama, Shinro Mashiko
Journal: The Journal of Chemical Physics
J. Chem. Phys. 116, 6541–6548 (2002)
https://doi.org/10.1063/1.1461815
Published: April 2002
View articletitled, Strong coupling of the single excitations in the Q-like bands of phenylene-linked free-base and zinc bacteriochlorin dimers: A time-dependent density functional theory study
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Journal Articles

Laser emission from high-gain media of dye-doped dendrimer

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Shiyoshi Yokoyama, Akira Otomo, Shinro Mashiko
Journal: Applied Physics Letters
Appl. Phys. Lett. 80, 7–9 (2002)
https://doi.org/10.1063/1.1431400
Published: January 2002
View articletitled, Laser emission from high-gain media of dye-doped dendrimer
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Journal Articles

Nonplanar adsorption and orientational ordering of porphyrin molecules on Au(111)

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Takashi Yokoyama, Shiyoshi Yokoyama, Toshiya Kamikado, Shinro Mashiko
Journal: The Journal of Chemical Physics
J. Chem. Phys. 115, 3814–3818 (2001)
https://doi.org/10.1063/1.1389276
Published: August 2001
View articletitled, Nonplanar adsorption and orientational ordering of porphyrin molecules on Au(111)
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Journal Articles

Supernarrowing mirrorless laser emission in dendrimer-doped polymer waveguides

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Akira Otomo, Shiyoshi Yokoyama, Tatsuo Nakahama, Shinro Mashiko
Journal: Applied Physics Letters
Appl. Phys. Lett. 77, 3881–3883 (2000)
https://doi.org/10.1063/1.1331092
Published: December 2000
View articletitled, Supernarrowing mirrorless laser emission in dendrimer-doped polymer waveguides
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Journal Articles

A reaction-path Hamiltonian described with quasirectilinear vibrational coordinates constructed from a nonlinear combination of curvilinear internal coordinates: Application to examination of the reaction CH 4 +F→CH 3 +HF

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Yoshishige Okuno, Shiyoshi Yokoyama, Shinro Mashiko
Journal: The Journal of Chemical Physics
J. Chem. Phys. 113, 3136–3140 (2000)
https://doi.org/10.1063/1.1287279
Published: August 2000
View articletitled, A reaction-path Hamiltonian described with quasirectilinear vibrational coordinates constructed from a nonlinear combination of curvilinear internal coordinates: Application to examination of the reaction CH 4 +F→CH 3 +HF
Open the PDF for A reaction-path Hamiltonian described with quasirectilinear vibrational coordinates constructed from a nonlinear combination of curvilinear internal coordinates: Application to examination of the reaction CH 4 +F→CH 3 +HF in another window