2019 - 2021 Precision angle measurement by conversion from time to angle based on autocollimation
2015 - 2020 Frontier of the precision optical metrology created by the ultra-precision optical nano-grid reference artifact and the absolute optical scale comb
2018 - 2019 超広帯域光源で開拓する高精度・高範囲角度センサの実現
2017 - 2019 Mid-infrared short-pulsed laser oscillation with development of basic technologies
2012 - 2013 低速原子衝突過程における実験とモデリング
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Papers (104):
Hiraku MATSUKUMA. 中赤外ファイバレーザの開発および精密計測への応用. Journal of the Japan Society for Precision Engineering. 2024. 90. 4. 325-329
Ryo Sato, Tao Liu, Satoru Maehara, Ryota Okimura, Hiraku Matsukuma, Wei Gao. Design of an Optical Head with Two Phase-Shifted Interference Signals for Direction Detection of Small Displacement in an Absolute Surface Encoder. International Journal of Automation Technology. 2024. 18. 2. 249-256
Tao Liu, Hiraku Matsukuma, Amane Suzuki, Ryo Sato, Wei Gao. Enhanced Data-Processing Algorithms for Dispersive Interferometry Using a Femtosecond Laser. Sensors. 2024. 24. 2. 370-370
Hiraku Matsukuma, Masashi Nagaoka, Hisashi Hirose, Ryo Sato, Yuki Shimizu, Wei Gao. Repetition Frequency Control of a Mid-Infrared Ultrashort Pulse Laser. International Journal of Automation Technology. 2024. 18. 1. 84-91
Jiucheng Wu, Yifang Hong, Dong Wook Shin, Ryo Sato, Lue Quan, Hiraku Matsukuma, Wei Gao. On-Machine Calibration of Pitch Deviations of a Linear Scale Grating by Using a Differential Angle Sensor. International Journal of Automation Technology. 2024. 18. 1. 4-10
2022/12 - 精密工学会メカノフォトニクス専門委員会 吉澤論文賞 An autocollimator with a mid-infrared laser for angular measurement of rough surfacesおよびMid-infrared autocollimation for linear motion error measurement
2022/12 - 一般財団法人 FA財団 FA財団論文賞 An absolute surface encoder with a planar scale grating of variable periods
2022/09 - nanoMan2022 & AETS2022 Best paper award Theoretical investigation of angle measurement based on third-harmonic generation (THG) with a femtosecond laser
2022/03 - 精密工学会 第18回 2021年度 精密工学会論文賞 An absolute surface encoder with a planar scale grating of variable periods
2022/01 - the International Society for Nanomanufacturing Excellent Article Award Reduction in Cross-Talk Errors in a Six-Degree-of-Freedom Surface Encoder
2021/12 - 一般財団法人 FA財団 FA財団論文賞 Design optimization of a non-orthogonal two-axis Lloyd's mirror interferometer for fabrication of large-area two-dimensional scale gratings
2021/03 - 精密工学会 沼田記念論文賞
2019/09 - International Committee on Measurement and Instrumentation Young Researcher Award Design and testing a high-resolution six-degree-of-freedom surface encoder