Dr. Haruhiko Ohashi Profile

Dr. Haruhiko Ohashi

at Japan Synchrotron Radiation Research Institute

SPIE Involvement:

Conference Program Committee | Editor | Author

Publications (52)

Proceedings Article | 6 October 2023 Presentation

Combining wave-optical and ray-tracing calculations in x-ray reflective optical systems

Hidekazu Mimura, Yoko Takeo, Hiroto Motoyama, Satoru Egawa, Takashi Kimura, Yasunori Senba, Takashi Tanaka, Haruhiko Ohashi

Proceedings Volume PC12697, PC1269702 (2023) https://doi.org/10.1117/12.2678528

KEYWORDS: X-rays, X-ray optics, X-ray lasers, Synchrotron radiation, Phase distribution, Partial coherence, Mirrors, Free electron lasers

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Proceedings Article | 4 October 2023 Presentation

In-situ metrology of high heat load optics in SPring-8

Haruhiko Ohashi, Hirokatsu Yumoto, Takahisa Koyama, Yasunori Senba, Hiroshi Yamazaki, Koji Tsubota, Satsuki Shimizu, Takamitsu Saito, Hikaru Kishimoto, Masayuki Tanaka, Yasuhiro Shimizu, Takaihsa Matsuzaki, Takanori Miura

Proceedings Volume PC12695, PC1269506 (2023) https://doi.org/10.1117/12.2682568

KEYWORDS: Metrology, Optical components, Distortion, Wavefronts, Thermal deformation, Simulations, Optical surfaces, Mirrors, Light sources, Crystals

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Proceedings Article | 3 October 2023 Presentation + Paper

Fabrication and surface evaluation of a high-precision monolithic mirror with complex geometry for soft x-ray focusing

T. Kume, Y. Matsuzawa, T. Saito, K. Hiraguri, Y. Takeo, T. Kimura, H. Kishimoto, Y. Senba, H. Ohashi, H. Mimura, H. Hashizume

Proceedings Volume 12694, 1269408 (2023) https://doi.org/10.1117/12.2677302

KEYWORDS: Mirrors, X-rays, Fabrication

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Proceedings Article | 4 October 2022 Presentation + Paper

Surface evaluation of high-precision monolithic mirror for soft x-ray focusing

T. Kume, Y. Matsuzawa, K. Hiraguri, Y. Takeo, T. Kimura, H. Kishimoto, Y. Senba, H. Ohashi, H. Hashizume, H. Mimura

Proceedings Volume 12240, 122400G (2022) https://doi.org/10.1117/12.2633765

KEYWORDS: Mirrors, X-rays, Profilometers, Stitching interferometry

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Proceedings Article | 4 October 2022 Presentation + Paper

Design of soft x-ray fluorescence microscopy beyond 100-nm spatial resolution with ultrashort Kirkpatrick-Baez mirror

Takenori Shimamura, Yoko Takeo, Fumika Moriya, Takashi Kimura, Mari Shimura, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Kenta Shimba, Yasuhiko Jimbo, Hidekazu Mimura

Proceedings Volume 12240, 1224004 (2022) https://doi.org/10.1117/12.2632949

KEYWORDS: Silicon, X-rays, Luminescence, Mirrors, X-ray fluorescence spectroscopy, Sensors, Aluminum, Fluorine, Fluorescence spectroscopy

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Proceedings Article | 3 October 2022 Presentation

High-speed imaging of metal drilling using 100-keV X-rays at SPring-8 (Conference Presentation)

Hidekazu Mimura, Gota Yamaguchi, Keito Tamura, Hirokatsu Yumoto, Takahisa Koyam, Hidekazu Takano, Yujiro Hayashi, Makina Yabashi, Haruhiko Ohashi

Proceedings Volume PC12240, PC1224009 (2022) https://doi.org/10.1117/12.2635300

KEYWORDS: X-rays, High speed imaging, X-ray imaging, Metals, Materials processing, Laser cutting, Visualization, Laser processing, Imaging systems, Analytical research

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Proceedings Article | 21 September 2021 Presentation + Paper

Current status of development of electroforming process for high-precision soft x-ray mirrors

T. Kume, G. Yamaguchi, K. Hiraguri, Y. Matsuzawa, Y. Imamura, H. Miyashita, T. Saito, Y. Takeo, Y. Senba, H. Kishimoto, H. Ohashi, H. Hashizume, H. Mimura

Proceedings Volume 11837, 1183707 (2021) https://doi.org/10.1117/12.2594044

KEYWORDS: X-rays, Mirrors, X-ray optics, Synchrotrons, Reflectivity, Light sources

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Proceedings Article | 21 September 2021 Presentation + Paper

Development of figure correction system for axisymmetric x-ray mirrors

Shunya Yokomae, Yoko Takeo, Takenori Shimamura, Yusuke Matsuzawa, Takehiro Kume, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hidekazu Mimura

Proceedings Volume 11837, 1183709 (2021) https://doi.org/10.1117/12.2594523

KEYWORDS: Mirrors, X-rays, Surface finishing, Abrasives, Nickel, Wavefronts, X-ray diffraction, Synchrotron radiation, Surface micromachining, Phase retrieval, X-ray optics

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Proceedings Article | 15 September 2020 Presentation + Paper

A test bench of X-ray optics for next-generation high-energy high-flux X-ray beamlines

Hirokatsu Yumoto, Haruhiko Ohashi, Hiroshi Yamazaki, Yasunori Senba, Takahisa Koyama, Kenji Tamasaku, Ichiro Inoue, Taito Osaka, Jumpei Yamada, Makina Yabashi, Shunji Goto

Proceedings Volume 11492, 114920I (2020) https://doi.org/10.1117/12.2570154

KEYWORDS: Hard x-rays, Monochromators, Mirrors, Silicon, Optical components, Reflection, Crystals, Liquid crystals, X-ray optics, X-rays

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Proceedings Article | 4 September 2020 Presentation + Paper

High precision free-form optics and application to soft x-ray mirrors

T. Kume, K. Hiraguri, Y. Imamura, H. Miyashita, T. Mukoda, Y. Matsuzawa, Y. Takeo, Y. Senba, H. Kishimoto, H. Ohashi, H. Mimura, H. Hashizume

Proceedings Volume 11491, 114910G (2020) https://doi.org/10.1117/12.2568909

KEYWORDS: Mirrors, X-rays, Freeform optics, Optics manufacturing, Precision optics, X-ray optics, Light sources, Solids

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Proceedings Article | 22 August 2020 Presentation

Development of x-ray mirrors for XFEL sub-10 nm focusing system based on Wolter type III geometry

Takato Inoue, Jumpei Yamada, Satoshi Matsuyama, Nami Nakamura, Taito Osaka, Hirokatsu Yumoto, Takahisa Koyama, Haruhiko Ohashi, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 11491, 114910B (2020) https://doi.org/10.1117/12.2566856

KEYWORDS: Mirrors, X-rays, X-ray lasers, Free electron lasers, Spatial coherence, Nonlinear optics, X-ray optics, Complex systems, Tolerancing, Interferometers

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Proceedings Article | 21 August 2020 Presentation + Paper

Design of two-stage soft-X-ray nano-focusing system with a ring-focusing mirror and quasi-Wolter mirror

Yoko Takeo, Hiroto Motoyama, Takenori Shimamura, Takashi Kimura, Takehiro Kume, Yusuke Matsuzawa, Takahiro Saito, Yoichi Imamura, Hiroaki Miyashita, Kentarou Hiraguri, Hirokazu Hashizume, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hidekazu Mimura

Proceedings Volume 11492, 114920N (2020) https://doi.org/10.1117/12.2570007

KEYWORDS: Mirrors, X-rays, Tolerancing, Monochromatic aberrations, Error analysis, X-ray technology, X-ray optics, Wavefront analysis, Optical design, Wavefront metrology

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Proceedings Article | 21 August 2020 Presentation

Development of shape measurement system for high precision Wolter mandrel

Takehiro Kume, Hirokazu Hashizume, Kentarou Hiraguri, Yusuke Matsuzawa, Yoichi Imamura, Hiroaki Miyashita, Takahiro Saito, Gota Yamaguchi, Yoko Takeo, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hidekazu Mimura

Proceedings Volume 11492, 114920M (2020) https://doi.org/10.1117/12.2568929

KEYWORDS: Mirrors, X-ray optics, X-ray imaging, Spatial resolution, Precision measurement, Profilometers

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Proceedings Article | 21 August 2020 Presentation

Glue-free bimorph mirror for vacuum chamber use

Yoshio Ichii, Satoshi Matsuyama, Masahiko Kanaoka, Hiromi Okada, Hiroki Nakamori, Takanori Miura, Haruhiko Ohashi, Kazuto Yamauchi

Proceedings Volume 11491, 114910I (2020) https://doi.org/10.1117/12.2570017

KEYWORDS: Mirrors, Ferroelectric materials, Deformable mirrors, Lead, Hard x-rays, X-rays, Silver, Nanoparticles, Actuators, Photovoltaics

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Proceedings Article | 21 August 2020 Presentation

Improvement on x-ray beam image by plane mirrors and x-ray windows for a modern x-ray beamline aiming at next generation light source

Yasunori Senba, Hirokatsu Yumoto, Takahisa Koyama, Takanori Miura, Hikaru Kishimoto, Yasuhiro Shimizu, Hiroshi Yamazaki, Haruhiko Ohashi

Proceedings Volume 11492, 114920J (2020) https://doi.org/10.1117/12.2570168

KEYWORDS: X-rays, X-ray imaging, Mirrors, Light sources, X-ray sources, X-ray optics, X-ray detectors, Polishing, X-ray diffraction, Crystals

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Proceedings Article | 21 August 2020 Presentation + Paper

Design of ultrashort Kirkpatrick-Baez mirror for soft x-ray nanofocusing

Takenori Shimamura, Yoko Takeo, Takashi Kimura, Hirokazu Hashizume, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hidekazu Mimura

Proceedings Volume 11492, 114920P (2020) https://doi.org/10.1117/12.2569845

KEYWORDS: Mirrors, X-rays, Reflectivity, X-ray optics, X-ray diffraction, X-ray microscopy, Diffraction, X-ray imaging, Light sources

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Proceedings Article | 9 September 2019 Paper

An optical design of twin Wolter mirrors for focusing and imaging experiments with soft X-ray free electron lasers

S. Egawa, G. Yamaguchi, H. Motoyama, S. Owada, Y. Kubota, K. Tono, H. Ohashi, M. Yabashi, H. Mimura

Proceedings Volume 11108, 1110804 (2019) https://doi.org/10.1117/12.2529039

KEYWORDS: Mirrors, Objectives, X-rays, Optical design, Free electron lasers, X-ray imaging, Imaging systems, X-ray lasers, Optical simulations, Spatial resolution

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Proceedings Article | 9 September 2019 Paper

Development of 120-mm-long ellipsoidal mirror for soft x-ray microscopy

T. Kume, H. Hashizume, K. Hiraguri, Y. Imamura, H. Miyashita, T. Mukoda, Y. Matsuzawa, G. Yamaguchi, Y. Takeo, T. Shimamura, Y. Senba, H. Kishimoto, H. Ohashi, H. Mimura

Proceedings Volume 11108, 1110806 (2019) https://doi.org/10.1117/12.2528296

KEYWORDS: Mirrors, X-rays, X-ray microscopy, X-ray optics

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Proceedings Article | 9 September 2019 Presentation

Precision focusing mirror alignment at SACLA using new nanobeam diagnosis (Conference Presentation)

Takato Inoue, Satoshi Matsuyama, Nami Nakamura, Hirokatsu Yumoto, Yuichi Inubushi, Takahisa Koyama, Taito Osaka, Ichiro Inoue, Kensuke Tono, Haruhiko Ohashi, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 11108, 1110802 (2019) https://doi.org/10.1117/12.2526972

KEYWORDS: Mirrors, X-rays, Beam shaping, Free electron lasers, Speckle pattern, X-ray lasers, Nanoprobes, Laser development, Diffraction gratings, Interferometers

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Proceedings Article | 9 September 2019 Paper

Remodeling of the optics for a micro-focusing protein crystallography beamline at SPring-8

Shunji Goto, Tomoyuki Takeuchi, Yasunori Senba, Hirokatsu Yumoto, Hiroshi Yamazaki, Haruhiko Ohashi, Seiki Baba, Nobuhiro Mizuno, Yuki Nakamura, Kazuya Hasegawa, Takashi Kumasaka, Kunio Hirata, Keitaro Yamashita, Naoki Sakai, Masaki Yamamoto

Proceedings Volume 11108, 111080I (2019) https://doi.org/10.1117/12.2530667

KEYWORDS: Proteins, Crystallography, Mirrors, Optical design, Crystals, Laser crystals, Monochromators

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Proceedings Article | 18 September 2018 Paper

Ptychography simulations for precisely measuring wavefront profiles in soft x-ray focusing system based on ellipsoidal mirror

Yoko Takeo, Hiroto Motoyama, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hidekazu Mimura

Proceedings Volume 10761, 107610F (2018) https://doi.org/10.1117/12.2320961

KEYWORDS: Mirrors, X-rays, Wavefronts, X-ray imaging, Optical simulations

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Proceedings Article | 18 October 2017 Presentation

Current status and future plan of the soft x-ray beamline at SACLA (Conference Presentation)

Shigeki Owada, Kyo Nakajima, Kensuke Tono, Yasumasa Joti, Tadashi Togashi, Kazuaki Togawa, Takahiro Inagaki, Toru Hara, Takashi Tanaka, Mitsuhiro Yamaga, Yasunori Senba, Hirokatsu Yumoto, Takahisa Koyama, Haruhiko Ohashi, Hitoshi Tanaka, Makina Yabashi

Proceedings Volume 10386, 103860G (2017) https://doi.org/10.1117/12.2275099

KEYWORDS: X-rays, Free electron lasers, Diagnostics, Laser optics, X-ray lasers, Hard x-rays, Prototyping, Laser development, X-ray sources, Synchrotrons

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Proceedings Article | 6 September 2017 Paper

Optical design of a sub-1-μm focusing system for soft x-ray free electron lasers

Hiroto Motoyama, Shigeki Owada, Kensuke Tono, Takahisa Koyama, Haruhiko Ohashi, Makina Yabashi, Hidekazu Mimura

Proceedings Volume 10386, 1038609 (2017) https://doi.org/10.1117/12.2271282

KEYWORDS: Mirrors, X-rays, Free electron lasers, Optical design, X-ray lasers, Light sources, Diffraction, Extreme ultraviolet, Light-matter interactions, Coating

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Proceedings Article | 11 May 2017 Paper

Overview of optics, photon diagnostics and experimental instruments at SACLA: development, operation and scientific applications

Kensuke Tono, Tadashi Togashi, Yuichi Inubushi, Tetsuo Katayama, Shigeki Owada, Toshinori Yabuuchi, Akira Kon, Ichiro Inoue, Taito Osaka, Hirokatsu Yumoto, Takahisa Koyama, Haruhiko Ohashi, Makina Yabashi

Proceedings Volume 10237, 1023706 (2017) https://doi.org/10.1117/12.2268238

KEYWORDS: Mirrors, Laser optics, Silicon, X-ray lasers, Crystallography, Diagnostics, Free electron lasers, X-rays, X-ray optics, Hard x-rays

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Proceedings Article | 2 November 2016 Presentation

Current status of the EUV/soft x-ray FEL beamline at SACLA (Conference Presentation)

Shigeki Owada, Kyo Nakajima, Tadashi Togashi, Kensuke Tono, Yasumasa Joti, Takahiro Inagaki, Toru Hara, Takashi Tanaka, Kazuaki Togawa, Mitsuhiro Yamaga, Takashi Sugimoto, Yasunori Senba, Hirokatsu Yumoto, Takahisa Koyama, Haruhiko Ohashi, Hitoshi Tanaka, Makina Yabashi

Proceedings Volume 9963, 996303 (2016) https://doi.org/10.1117/12.2237475

KEYWORDS: Free electron lasers, X-rays, Hard x-rays, Prototyping, Extreme ultraviolet, Electron beams, Synchrotron radiation, X-ray optics, Alternate lighting of surfaces, Current controlled current source

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Proceedings Article | 8 September 2016 Presentation + Paper

Development of a long trace profiler at SPring-8 using a newly developed slope sensor

Y. Senba, H. Kishimoto, T. Miura, H. Ohashi

Proceedings Volume 9962, 996204 (2016) https://doi.org/10.1117/12.2239394

KEYWORDS: X-ray optics, Synchrotron radiation, Laser development, Sensors, Spatial resolution, Mirrors, CCD cameras, Laser beam diagnostics, Collimation, Optical simulations

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Proceedings Article | 12 May 2015 Paper

Damage to inorganic materials illuminated by focused beam of x-ray free-electron laser radiation

Takahisa Koyama, Hirokatsu Yumoto, Kensuke Tono, Tadashi Togashi, Yuichi Inubushi, Tetsuo Katayama, Jangwoo Kim, Satoshi Matsuyama, Makina Yabashi, Kazuto Yamauchi, Haruhiko Ohashi

Proceedings Volume 9511, 951107 (2015) https://doi.org/10.1117/12.2182778

KEYWORDS: Silicon, X-rays, Silica, Mirrors, Grazing incidence, Coating, Reflectivity, Free electron lasers, X-ray lasers, Metals

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Proceedings Article | 5 September 2014 Paper

Upgrade of surface profiler for x-ray mirror at SPring-8

Y. Senba, H. Kishimoto, T. Miura, H. Ohashi

Proceedings Volume 9206, 920604 (2014) https://doi.org/10.1117/12.2063356

KEYWORDS: Mirrors, Reflection, X-rays, Fizeau interferometers, Autocollimators, X-ray optics, Sensors, Profilometers, Synchrotron radiation, Thermal effects

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Proceedings Article | 5 September 2014 Paper

Ultra-high-precision surface processing techniques for nanofocusing ellipsoidal mirrors in hard x-ray region

Hirokatsu Yumoto, Takahisa Koyama, Satoshi Matsuyama, Kazuto Yamauchi, Haruhiko Ohashi

Proceedings Volume 9206, 920605 (2014) https://doi.org/10.1117/12.2063146

KEYWORDS: Mirrors, Surface roughness, Off axis mirrors, Head, Hard x-rays, X-rays, X-ray optics, Computing systems, Reflectivity, Nanolithography

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Proceedings Article | 5 September 2014 Paper

Characterization of thin HPHT IIa diamond by transmission and reflection measurements

Shunji Goto, Hiroshi Yamazaki, Ayumi Miura, Kenji Doi, Yuichi Inubushi, Haruhiko Ohashi, Makina Yabashi

Proceedings Volume 9207, 92070O (2014) https://doi.org/10.1117/12.2063594

KEYWORDS: Crystals, Transmittance, Diamond, X-rays, Diffraction, Reflection, Silicon, X-ray imaging, Reflectivity, Collimators

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Proceedings Article | 27 September 2013 Paper

Damage characteristics of platinum/carbon multilayers under x-ray free-electron laser irradiation

Jangwoo Kim, Takahisa Koyama, Hirokatsu Yumoto, Ayaka Nagahira, Satoshi Matsuyama, Yasuhisa Sano, Makina Yabashi, Haruhiko Ohashi, Tetsuya Ishikawa, Kazuto Yamauchi

Proceedings Volume 8848, 88480S (2013) https://doi.org/10.1117/12.2022735

KEYWORDS: Multilayers, X-rays, Reflectivity, Platinum, Grazing incidence, Free electron lasers, Transmission electron microscopy, X-ray optics, Carbon, X-ray lasers

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Proceedings Article | 27 September 2013 Paper

Investigation of high thermal contact conductance at low contact pressure for high-heat-load optical elements of synchrotron radiation

T. Takeuchi, M. Tanaka, H. Ohashi, S. Goto

Proceedings Volume 8848, 884813 (2013) https://doi.org/10.1117/12.2025369

KEYWORDS: Gold, Interfaces, Copper, Indium, Synchrotron radiation, Optical components, Nickel, Sensors, Plating, Temperature metrology

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Proceedings Article | 27 September 2013 Paper

Damage threshold investigation using grazing incidence irradiation by hard x-ray free electron laser

T. Koyama, H. Yumoto, K. Tono, T. Sato, T. Togashi, Y. Inubushi, T. Katayama, J. Kim, S. Matsuyama, H. Mimura, M. Yabashi, K. Yamauchi, H. Ohashi

Proceedings Volume 8848, 88480T (2013) https://doi.org/10.1117/12.2025377

KEYWORDS: Reflectivity, X-rays, Mirrors, Laser damage threshold, Free electron lasers, Hard x-rays, Coating, Grazing incidence, Rhodium, X-ray optics

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Proceedings Article | 3 May 2013 Paper

Results from single shot grazing incidence hard x-ray damage measurements conducted at the SACLA FEL

Andrew Aquila, Cigdem Ozkan, Ryszard Sobierajski, Vera Hájková, Tomás Burian, Jakub Chalupsky, Libor Juha, Michael Störmer, Haruhiko Ohashi, Takahisa Koyama, Kensuke Tono, Yuichi Inubushi, Makina Yabashi, Harald Sinn, Thomas Tschentscher, Adrian Mancuso, Jérôme Gaudin

Proceedings Volume 8777, 87770H (2013) https://doi.org/10.1117/12.2017725

KEYWORDS: Free electron lasers, X-rays, Carbon, Mirrors, Grazing incidence, Hard x-rays, Optical coatings, X-ray optics, Laser damage threshold, Solids

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Proceedings Article | 15 October 2012 Paper

Measurement of groove density variation of varied-line-space grating for high-resolution soft x-ray monochromator

Y. Senba, H. Kishimoto, T. Miura, H. Ohashi, S. Goto, T. Ishikawa

Proceedings Volume 8501, 850104 (2012) https://doi.org/10.1117/12.936518

KEYWORDS: Diffraction, Spectral resolution, Diffraction gratings, Monochromators, X-rays, Tolerancing, Synchrotron radiation, Optical design, Monochromatic aberrations, Statistical analysis

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Proceedings Article | 28 September 2011 Paper

Thermal-contact-conductance measurement for high-heat-load optics components at SPring-8

T. Takeuchi, M. Tanaka, Y. Senba, H. Ohashi, S. Goto

Proceedings Volume 8139, 813911 (2011) https://doi.org/10.1117/12.894612

KEYWORDS: Copper, Interfaces, Temperature metrology, Silicon, Crystals, Gold, Synchrotron radiation, Optical testing, Thermography, Cryogenics

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Proceedings Article | 28 September 2011 Paper

Upgrade status of hard x-ray 100-nm probe beamlines BL37XU and BL39XU at SPring-8

Takahisa Koyama, Hirokatsu Yumoto, Yasuko Terada, Motohiro Suzuki, Naomi Kawamura, Masaichiro Mizumaki, Nobuteru Nariyama, Tomohiro Matsushita, Yasuhide Ishizawa, Yukito Furukawa, Toru Ohata, Hiroshi Yamazaki, Tomoyuki Takeuchi, Yasunori Senba, Yasuhisa Matsuzaki, Masayuki Tanaka, Yasuhiro Shimizu, Hikaru Kishimoto, Takanori Miura, Hiroaki Kimura, Kunikazu Takeshita, Haruhiko Ohashi, Masaki Yamamoto, Shunji Goto, Masaki Takata, Tetsuya Ishikawa

Proceedings Volume 8139, 81390I (2011) https://doi.org/10.1117/12.893459

KEYWORDS: Mirrors, X-rays, Monochromators, Silicon, Cryogenics, Magnetism, Hard x-rays, Laser beam diagnostics, Light sources, Rhodium

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Proceedings Article | 23 September 2011 Paper

Theory and numerical simulations of x-ray nanofocusing by bent crystal in back diffraction geometry

Alexey Suvorov, Haruhiko Ohashi, Shunji Goto, Tetsuya Ishikawa

Proceedings Volume 8141, 81410S (2011) https://doi.org/10.1117/12.894369

KEYWORDS: Crystals, Diffraction, X-rays, Numerical simulations, X-ray diffraction, Spherical lenses, Reflectivity, Wave propagation, X-ray optics, Monochromatic aberrations

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Proceedings Article | 16 April 2011 Paper

Fundamental study on reaction mechanisms in chemically amplified extreme ultraviolet resists by using 61nm free-electron laser

Kazumasa Okamoto, Takahiro Kozawa, Takaki Hatsui, Yasuharu Tajima, Keita Oikawa, Mitsuru Nagasono, Takashi Kameshima, Tadashi Togashi, Kensuke Tono, Makina Yabashi, Hiroaki Kimura, Yasunori Senba, Haruhiko Ohashi, Takashi Sumiyoshi

Proceedings Volume 7972, 797217 (2011) https://doi.org/10.1117/12.879358

KEYWORDS: Ionization, Extreme ultraviolet, Free electron lasers, Ions, Electrons, Argon, Polymers, Protactinium, Absorption, Extreme ultraviolet lithography

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Proceedings Article | 28 February 2011 Paper

Ablation by short optical and x-ray laser pulses

N. Inogamov, S. Anisimov, V. Zhakhovsky, A. Ya. Faenov, Yu. V. Petrov, V. Khokhlov, V. Fortov, M. Agranat, S. Ashitkov, P. Komarov, I. Yu. Skobelev, Y. Kato, T. Pikuz, V. Shepelev, Y. Fukuda, M. Tanaka, M. Kishimoto, M. Ishino, M. Nishikino, M. Kando, T. Kawachi, M. Nagasono, H. Ohashi, M. Yabashi, K. Tono, Y. Senba, T. Togashi, T. Ishikawa

Proceedings Volume 7996, 79960T (2011) https://doi.org/10.1117/12.887429

KEYWORDS: Laser induced fluorescence, Crystals, Laser ablation, Aluminum, Laser crystals, Picosecond phenomena, Dielectrics, Tellurium, Ionization, Extreme ultraviolet

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Proceedings Article | 2 September 2010 Paper

Present status of upgraded long trace profiler for characterization of high-precision x-ray mirrors at SPring-8

Y. Senba, H. Kishimoto, H. Ohashi, H. Yumoto, S. Goto, T. Ishikawa

Proceedings Volume 7801, 780104 (2010) https://doi.org/10.1117/12.861021

KEYWORDS: Mirrors, Beam splitters, Sensors, X-rays, Synchrotron radiation, X-ray characterization, Temperature metrology, Helium neon lasers, Optical components, Ceramics

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Proceedings Article | 9 September 2009 Paper

Development of a high-precision slit for x-ray beamline at SPring-8

T. Takeuchi, M. Tanaka, T. Miura, Y. Senba, Y. Shimada, H. Tajiri, O. Sakata, M. Sato, T. Koganezawa, K. Uesugi, H. Ohashi, S. Goto

Proceedings Volume 7448, 74480Y (2009) https://doi.org/10.1117/12.826838

KEYWORDS: X-rays, X-ray diffraction, Mirrors, Interferometers, Monochromators, Standards development, Microscopes, Beam shaping, X-ray optics, Photography

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Proceedings Article | 9 September 2009 Paper

Design optimization of highly accurate elliptical mirrors for hard-x-ray microfocusing probes at SPring-8

Hirokatsu Yumoto, Kunio Hirata, Atsushi Nisawa, Go Ueno, Masugu Sato, Jin-Young Son, Tomoyuki Koganezawa, Masatake Machida, Takayuki Muro, Ichiro Hirosawa, Motohiro Suzuki, Naomi Kawamura, Masaichiro Mizumaki, Haruhiko Ohashi, Masaki Yamamoto, Yoshio Watanabe, Shunji Goto

Proceedings Volume 7448, 74480Z (2009) https://doi.org/10.1117/12.827024

KEYWORDS: Mirrors, X-rays, Photons, Reflectivity, X-ray magnetic circular dichroism, Spectroscopy, Magnetism, Error analysis, X-ray optics, Rhodium

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Proceedings Article | 3 September 2008 Paper

Present status of stability improvement of SPring-8 standard x-ray monochromators

Hiroshi Yamazaki, Yasuhiro Shimizu, Nobutaka Shimizu, Masahide Kawamoto, Yoshiaki Kawano, Yasunori Senba, Haruhiko Ohashi, Shunji Goto

Proceedings Volume 7077, 707719 (2008) https://doi.org/10.1117/12.796685

KEYWORDS: Crystals, Monochromators, X-rays, Silicon, Laser crystals, Synchrotron radiation, Copper, Crystallography, Diamond, Diffraction

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Proceedings Article | 3 September 2008 Paper

Fabrication of a 400-mm-long mirror for focusing x-ray free-electron lasers to sub-100 nm

Hidekazu Mimura, Shinya Morita, Takashi Kimura, Daisuke Yamakawa, Weimin Lin, Yoshihiro Uehara, Hirokatsu Yumoto, Satoshi Matsuyama, Yoshinori Nishino, Kenji Tamasaku, Haruhiko Ohashi, Makina Yabashi, Tetsuya Ishikawa, Hitoshi Ohmori, Kazuto Yamauchi

Proceedings Volume 7077, 70770R (2008) https://doi.org/10.1117/12.795643

KEYWORDS: Mirrors, X-rays, Photography, X-ray lasers, Free electron lasers, X-ray technology, Hard x-rays, Particles, Stitching interferometry, Synchrotron technology

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Proceedings Article | 1 October 2007 Paper

Microstitching interferometer and relative angle determinable stitching interferometer for half-meter-long x-ray mirror

Haruhiko Ohashi, Takashi Tsumura, Hiromi Okada, Hidekazu Mimura, Tatsuhiko Masunaga, Yasunori Senba, Shunji Goto, Kazuto Yamauchi, Tetsuya Ishikawa

Proceedings Volume 6704, 670405 (2007) https://doi.org/10.1117/12.733476

KEYWORDS: Mirrors, Multispectral imaging, Interferometers, X-rays, Fizeau interferometers, Actuators, Synchrotron radiation, Head, Photography, Neodymium

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Proceedings Article | 27 September 2007 Paper

Second metrology round-robin of APS, ESRF and SPring-8 laboratories of elliptical and spherical hard-x-ray mirrors

A. Rommeveaux, L. Assoufid, H. Ohashi, H. Mimura, K. Yamauchi, J. Qian, T. Ishikawa, C. Morawe, A. Macrander, A. Khounsary, S. Goto

Proceedings Volume 6704, 67040B (2007) https://doi.org/10.1117/12.736171

KEYWORDS: Mirrors, Spherical lenses, Metrology, X-rays, Error analysis, Silicon, Silicon carbide, Interferometry, Optical components, Sensors

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Proceedings Article | 20 September 2007 Paper

Measurement of thermal contact conductance of SPring-8 beamline components

Tetsuro Mochizuki, Haruhiko Ohashi, Mutsumi Sano, Sunao Takahashi, Shunji Goto

Proceedings Volume 6705, 67050U (2007) https://doi.org/10.1117/12.735397

KEYWORDS: Interfaces, Copper, Aluminum, Cryogenics, Temperature metrology, Resistance, Gold, Silicon, Silver, Indium

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Proceedings Article | 18 May 2007 Paper

Optics development for Japanese XFEL project

Makina Yabashi, Atsushi Higashiya, Kenji Tamasaku, Hiroaki Kimura, Togo Kudo, Haruhiko Ohashi, Sunao Takahashi, Shunji Goto, Tetsuya Ishikawa

Proceedings Volume 6586, 658605 (2007) https://doi.org/10.1117/12.724318

KEYWORDS: Silicon carbide, Diamond, Silicon, Optical components, Beryllium, Mirrors, X-rays, X-ray optics, Free electron lasers, Monochromators

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Proceedings Article | 29 August 2006 Paper

Evaluation of a modern soft x-ray monochromator with high resolving power over 10,000

Haruhiko Ohashi, Yasunori Senba, Eiji Ishiguro, Shunji Goto, Shik Shin, Tetsuya Ishikawa

Proceedings Volume 6317, 63171A (2006) https://doi.org/10.1117/12.682329

KEYWORDS: Monochromators, Photoemission spectroscopy, Xenon, X-rays, Spectroscopy, Neon, Spectral resolution, Mirrors, Calibration, Doppler effect

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Proceedings Article | 17 September 2005 Paper

Results of x-ray mirror round-robin metrology measurements at the APS, ESRF, and SPring-8 optical metrology laboratories

Lahsen Assoufid, Amparo Rommeveaux, Haruhiko Ohashi, Kazuto Yamauchi, Hidekazu Mimura, Jun Qian, Olivier Hignette, Tetsuya Ishikawa, Christian Morawe, Albert Macrander, Ali Khounsary, Shunji Goto

Proceedings Volume 5921, 59210J (2005) https://doi.org/10.1117/12.623209

KEYWORDS: Mirrors, Silicon, Metrology, Data conversion, Error analysis, Sensors, X-rays, Fourier transforms, Optical metrology, Synchrotron radiation

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Proceedings Article | 5 January 2001 Paper

1-km beamline at SPring-8

Tetsuya Ishikawa, Kenji Tamasaku, Makina Yabashi, Shunji Goto, Y. Tanaka, Hiroshi Yamazaki, Kunikazu Takeshita, Hidekazu Kimura, H. Ohashi, T. Matsushita, T. Ohata

Proceedings Volume 4145, (2001) https://doi.org/10.1117/12.411621

KEYWORDS: X-rays, Crystals, Monochromators, Beryllium, Laser crystals, Diffraction, Synchrotron radiation, X-ray imaging, Interferometers, Diamond

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