Prof. Hiroshi Ikenoue Profile

Prof. Hiroshi Ikenoue

at Kyushu Univ

SPIE Involvement:

Author

Publications (28)

Proceedings Article | 13 March 2024 Presentation

Effect of ring-shaped beam on microparticle fabrication and laser welding

Daisuke Nakamura, Kazutaka Horinouchi, Masahiro Koba, Ippei Watanabe, Toshifumi Kikuchi, Keita Katayama, Mitsuhiro Higashihata, Hiroshi Ikenoue

Proceedings Volume PC12872, PC128720I (2024) https://doi.org/10.1117/12.3009651

KEYWORDS: Laser welding, Fabrication, Laser ablation, Semiconductors, Semiconductor lasers, Ring lasers, Pulsed laser operation, Particles, Metals, Laser processing

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Proceedings Article | 12 March 2024 Presentation + Paper

Joint quality assessment by machine learning using characterized surface thermal radiation images of laser welding process

T. Kikuchi, R. Takabatake, K. Katayama, H. Ikenoue, D. Nakamura

Proceedings Volume 12878, 128780E (2024) https://doi.org/10.1117/12.3000891

KEYWORDS: Machine learning, Laser welding, Imaging spectroscopy, Spectroscopy, Laser radiation, Laser processing, Laser irradiation, Image processing

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Proceedings Article | 12 March 2024 Presentation + Paper

Influence of flow rate and gas type with a novel nozzle capable of simultaneously gas flow and suction on weld quality in laser welding

M. Koba, T. Kikuchi, D. Nakamura, H. Ikenoue

Proceedings Volume 12878, 128780F (2024) https://doi.org/10.1117/12.3001226

KEYWORDS: Nozzles, Laser irradiation, Copper, Laser welding, Blue lasers, Oxygen, Lasers, Infrared lasers, Light absorption, Laser scanners

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Proceedings Article | 17 March 2023 Poster + Paper

Excimer laser doping for the fabrication of 4H-SiC power devices

Yoshiaki Kakimoto, Keita Katayama, Takuma Yasunami, Tetsuya Goto, Daisuke Nakamura, Hiroshi Ikenoue

Proceedings Volume 12408, 124080M (2023) https://doi.org/10.1117/12.2651419

KEYWORDS: Silicon carbide, Laser irradiation, Doping, Resistance, Nitrogen, Excimer lasers, Diffusion, Surface roughness, Fabrication, Silicon

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Proceedings Article | 17 March 2023 Poster + Paper

Nanosecond time-resolved two-dimensional temperature estimation of nanosecond laser-irradiated silicon

R. Koike, T. Kikuchi, K. Katayama, Y. Kakimoto, D. Nakamura, H. Ikenoue

Proceedings Volume 12408, 124080J (2023) https://doi.org/10.1117/12.2648631

KEYWORDS: Laser irradiation, Temperature metrology, Silicon, Pulsed laser operation, Temperature distribution, Laser processing, Laser radiation, Excimer lasers, Cameras, Solids

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Proceedings Article | 20 April 2021 Poster + Presentation + Paper

Fabrication of nanoparticles of oxide materials by UV pulsed laser ablation in gas phase

Rio Suzuki, Reiji Koike, Keita Katayama, Mitsuhiro Higashihata, Hiroshi Ikenoue, Daisuke Nakamura

Proceedings Volume 11674, 116741G (2021) https://doi.org/10.1117/12.2576843

KEYWORDS: Nanoparticles, Laser ablation, Ultraviolet radiation, Oxides, Nanolithography, Gas lasers, Zinc oxide, Optoelectronics, Nanocrystals, Visualization

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Proceedings Article | 10 March 2021 Presentation + Paper

Formation of twisted Au microstructures by optical vortex pulse irradiation

Tsubasa Fujimoto, Miki Kawamoto, Mitsuhiro Higashihata, Daisuke Nakamura, Hiroshi Ikenoue

Proceedings Volume 11674, 1167410 (2021) https://doi.org/10.1117/12.2577106

KEYWORDS: Optical vortices, Gold, Thin films, Pulsed laser operation, Optical simulations, Laser optics

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Proceedings Article | 5 March 2021 Presentation + Paper

Estimation of the mobility of low temperature polycrystalline silicon thin film transistors through deep learning

Akira Mizutani, Fuminobu Hamano, Keita Katayama, Daisuke Nakamura, Tetsuya Goto, Hiroshi Ikenoue

Proceedings Volume 11673, 1167306 (2021) https://doi.org/10.1117/12.2579492

KEYWORDS: Transistors, Silicon films, Annealing, Silicon, Optical microscopes, Image quality, Excimer lasers, Crystals, Amorphous silicon, Thin films

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Proceedings Article | 22 January 2020 Presentation + Paper

Surface flattening of poly-Si thin films by laser annealing and electrical properties of LTPS-TFTs

Fuminobu Hamano, Akira Mizutani, Kaname Imokawa, Daisuke Nakamura, Tetsuya Goto, Hiroshi Ikenoue

Proceedings Volume 11268, 1126810 (2020) https://doi.org/10.1117/12.2544910

KEYWORDS: Thin films, Annealing, Excimer lasers, Crystals, Laser irradiation, Radium, Thin film devices, Transistors, Switching, Flat panel displays

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Proceedings Article | 13 March 2019 Presentation

Fabrication of multicomponent semiconductor microspheres by laser ablation in air (Conference Presentation)

Daisuke Nakamura, Yuichiro Wakiyama, Hiroki Oshima, Mitsuhiro Higashihata, Hiroshi Ikenoue, Nilesh Vasa, M. S. Ramachandra Rao

Proceedings Volume 10905, 1090510 (2019) https://doi.org/10.1117/12.2510985

KEYWORDS: Semiconductors, Laser ablation, Semiconductor lasers, Fabrication, Crystals, Spherical lenses, Laser crystals, Zinc oxide, Silicon, Liquid crystals

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Proceedings Article | 4 March 2019 Presentation + Paper

Formation of nanoporous SiO2 films with super-low dielectric constant by F2 laser deposition

Ryota Miyano, Toshifumi Kikuchi, Kaname Imokawa, Daisuke Nakamura, Hiroshi Ikenoue

Proceedings Volume 10907, 109070S (2019) https://doi.org/10.1117/12.2509176

KEYWORDS: Protactinium, Argon, Nanoparticles, Dielectrics, Quartz, Molecules, Silica, Laser ablation, Atomic force microscopy, Resistance

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Proceedings Article | 4 March 2019 Presentation + Paper

Low-temperature, high-concentration laser doping of 4H-SiC for low contact resistance

T. Kikuchi, K. Imokawa, A. Ikeda, D. Nakamura, T. Asano, H. Ikenoue

Proceedings Volume 10905, 109050Z (2019) https://doi.org/10.1117/12.2509191

KEYWORDS: Silicon carbide, Doping, Resistance, Electrodes, Crystals, Laser irradiation, Argon, Excimer lasers, Oxidation, Nitrogen

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Proceedings Article | 4 March 2019 Presentation + Paper

Low-temperature and low-cost excimer laser doping for poly-Si thin-film transistor fabrication

Kaname Imokawa, Nozomu Tanaka, Akira Suwa, Daisuke Nakamura, Taizoh Sadoh, Tetsuya Goto, Hiroshi Ikenoue

Proceedings Volume 10906, 109060J (2019) https://doi.org/10.1117/12.2509141

KEYWORDS: Silicon, Doping, Excimer lasers, Transistors, Phosphorus, Amorphous silicon, Thin films, Pulsed laser operation, Electrodes, Coating

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Proceedings Article | 4 March 2019 Presentation + Paper

Synthesis of GeSn particles with high substitutional Sn concentration by pulsed laser deposition

Teppei Nakashima, Toshifumi Kikuchi, Kaname Imokawa, Daisuke Nakamura, Hiroshi Ikenoue

Proceedings Volume 10907, 109070P (2019) https://doi.org/10.1117/12.2509179

KEYWORDS: Particles, Tin, Raman spectroscopy, Spherical lenses, Argon, Crystals, Germanium, Chemical species, Silicon, Protactinium

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Proceedings Article | 14 March 2018 Presentation

Simple fabrication of semiconductor microspheres by laser ablation in air (Conference Presentation)

Daisuke Nakamura, Ryohei Tasaki, Yuichiro Wakiyama, Sho Kawagoe, Hiroki Oshima, Mitsuhiro Hiashihata, Nilesh Vasa, Hiroshi Ikenoue

Proceedings Volume 10519, 1051914 (2018) https://doi.org/10.1117/12.2291401

KEYWORDS: Laser ablation, Zinc oxide, Semiconductor lasers, Semiconductors, Optical vortices, Crystals, Laser crystals, Silicon, Laser processing, Beam shaping

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Proceedings Article | 21 April 2017 Presentation

High-speed observation of ZnO microspherical crystals produced by laser ablation (Conference Presentation)

Daisuke Nakamura, Ryohei Tasaki, Yuki Fujiwara, Fumiaki Nagasaki, Mitsuhiro Higashihata, Hiroshi Ikenoue, Tatsuo Okada

Proceedings Volume 10091, 100910E (2017) https://doi.org/10.1117/12.2253468

KEYWORDS: Laser applications, Zinc oxide, Crystals, Laser ablation, Laser crystals, Optoelectronic devices, Ultraviolet radiation, Optical spheres, Spherical lenses, High speed cameras

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Proceedings Article | 20 February 2017 Presentation + Paper

Damage free Al doping on 4H-SiC with passivation films using XeF excimer laser irradiation in AlCl3 acid solution

T. Tsuchiya, A. Suwa, A. Ikeda, D. Nakamura, T. Asano, H. Ikenoue

Proceedings Volume 10091, 1009106 (2017) https://doi.org/10.1117/12.2250712

KEYWORDS: Silicon carbide, Doping, Aluminum, Excimer lasers, Laser irradiation, Luminescence, Silicon, Physical vapor deposition, Wet etching, Plasma treatment, Electroluminescence, Laser ablation, Diodes

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Proceedings Article | 6 April 2016 Paper

Improvement in contact resistance of 4H-SiC by excimer laser doping using silicon nitride films

R. Kojima, H. Ikenoue, M. Suwa, A. Ikeda, D. Nakamura, T. Asano, T. Okada

Proceedings Volume 9738, 973803 (2016) https://doi.org/10.1117/12.2212021

KEYWORDS: Silicon carbide, Doping, Excimer lasers, Laser ablation, Resistance, Nitrogen, Laser irradiation

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Proceedings Article | 14 March 2016 Paper

Fabrication and bandgap engineering of doped ZnO microspheres by simple laser ablation in air

Daisuke Nakamura, Tetsuya Shimogaki, Toshinobu Tanaka, Fumiaki Nagasaki, Yuki Fujiwara, Mitsuhiro Higashihata, Hiroshi Ikenoue, Tatsuo Okada

Proceedings Volume 9735, 973511 (2016) https://doi.org/10.1117/12.2214054

KEYWORDS: Zinc oxide, Ultraviolet radiation, Laser ablation, Doping, Crystals, Ultraviolet light emitting diodes, Semiconductor lasers, Buildings, Magnesium, Nd:YAG lasers, Micro raman spectroscopy, Spectroscopy, Laser crystals

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Proceedings Article | 14 March 2016 Paper

Observation of graphene growing process on SiC(0001) surface formed by KrF excimer-laser irradiation

Masakazu Hattori, Hiroshi Ikenoue, Daisuke Nakamura, Tatsuo Okada

Proceedings Volume 9735, 97350Y (2016) https://doi.org/10.1117/12.2211865

KEYWORDS: Graphene, Silicon carbide, Excimer lasers, Laser irradiation, Carbon, Laser processing, Atomic force microscopy, Transmission electron microscopy, Pulsed laser operation, Silicon, Optical lithography, Raman spectroscopy, Signal detection, Lithography

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Proceedings Article | 13 March 2015 Paper

Fabrication of ZnO crystals by UV-laser annealing on ZnO nanoparticles prepared by laser ablation method

T. Shimogaki, H. Kawahara, M. Higashihata, H. Ikenoue, D. Nakamura, Y. Nakata, T. Okada

Proceedings Volume 9364, 93640C (2015) https://doi.org/10.1117/12.2078849

KEYWORDS: Zinc oxide, Nanoparticles, Crystals, Annealing, Laser crystals, Nanocrystals, Ultraviolet radiation, Scanning electron microscopy, Laser ablation, Nanowires

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Proceedings Article | 12 March 2015 Paper

Direct growth of patterned graphene on SiC(0001) surfaces by KrF excimer-laser irradiation

Masakazu Hattori, Kazuaki Furukawa, Makoto Takamura, Hiroki Hibino, Hiroshi Ikenoue

Proceedings Volume 9351, 93511A (2015) https://doi.org/10.1117/12.2078652

KEYWORDS: Graphene, Raman spectroscopy, Carbon, Laser irradiation, Silicon carbide, Transmission electron microscopy, Chemical species, Silicon, Atomic force microscopy, Protactinium

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Proceedings Article | 4 March 2015 Paper

Synthesis of Sb-doped ZnO microspheres by pulsed laser ablation and their photoluminescence properties

T. Tanaka, T. Shimogaki, F. Nagasaki, M. Higashihata, D. Nakamura, H. Ikenoue, T. Okada

Proceedings Volume 9350, 93501L (2015) https://doi.org/10.1117/12.2180460

KEYWORDS: Zinc oxide, Antimony, Ultraviolet radiation, Laser ablation, Nd:YAG lasers, Crystals, Zinc, Raman spectroscopy, Luminescence, Scanning electron microscopy

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Proceedings Article | 8 March 2014 Paper

Electroluminescence from ZnO nanowire-based heterojunction LED

D. Nakamura, N. Tetsuyama, T. Shimogaki, M. Higashihata, H. Ikenoue, T. Okada

Proceedings Volume 8987, 89870H (2014) https://doi.org/10.1117/12.2039705

KEYWORDS: Zinc oxide, Heterojunctions, Light emitting diodes, Gallium nitride, Laser irradiation, Electroluminescence, Ultraviolet radiation, Pulsed laser deposition, Visible radiation, Nanowires

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Proceedings Article | 8 March 2014 Paper

Control of optical and electrical properties of ZnO nanocrystals by nanosecond-laser annealing

T. Shimogaki, T. Ofuji, N. Tetsuyama, H. Kawahara, M. Higashihata, H. Ikenoue, D. Nakamura, T. Okada

Proceedings Volume 8987, 89870G (2014) https://doi.org/10.1117/12.2039184

KEYWORDS: Zinc oxide, Annealing, Thin films, Nanocrystals, Crystals, Excimer lasers, Scanning electron microscopy, Antimony, Nanowires, Nanorods

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Proceedings Article | 8 March 2014 Paper

Emission characteristics of electrically- and optically-pumped single ZnO micro-spherical crystal

D. Nakamura, T. Shimogaki, N. Tetsuyama, K. Fusazaki, Y. Mizokami, M. Higashihata, H. Ikenoue, T. Okada

Proceedings Volume 8987, 89870B (2014) https://doi.org/10.1117/12.2038922

KEYWORDS: Zinc oxide, Ultraviolet radiation, Heterojunctions, Electroluminescence, Optical spheres, Crystals, Nd:YAG lasers, Laser ablation, Singular optics, Refractive index

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