Ultrahigh Precision Optics Technology Team

Team Leader

Yutaka Yamagata


Yutaka Yamagata


Access map

yamagata [at] riken.jp

Ultrahigh Precision Optics Technology Team,
RIKEN Center for Advanced Photonics

2-1 Hirosawa, Wako, Saitama 351-0198 Japan

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Our team develops advanced ultrahigh-precision/micro fabrication technologies and their application to scientific apparatuses and devices to support advanced scientific research at RIKEN. Research and development plans of our team include the following four topics: (1) Development of ultrahigh-precision optics including design, fabrication, metrology and computational simulation; (2) Development of ultrahigh-precision/micro fabrication technologies; (3) Development of materials and devices for biology or biochemistry such as microfluidic immunoassay devices.
In all R&D topics, our team collaborates with laboratories inside and outside of RIKEN and helps them to construct the most advanced experimental apparatuses, which will lead to innovative scientific research results.


Engineering, Interdisciplinary science and engineering


Ultrahigh Precision Machining, Ultrahigh Precision Metrology, Aspherical Optics, Production Technology, Neutron Optics


  1. Fabrication, design, metrology and simulation of ultrahigh precision optics
  2. Fabrication of micro structure by precision machining
  3. Prototyping of precision optics in collaboration with Advanced Manufacturing Support Team

An elliptic neutron focusing mirror with metallic substrate used in J-PARC BL-16(SOFIA)

Selected Publications

  1. T.Hosobata, N.L.Yamada, M.Hino, H.Yoshinaga, F.Nemoto, K.Hori et al., Elliptic neutron-focusing supermirror for illuminating small samples in neutron reflectometry, Optics Express Vol. 27, Issue 19, pp. 26807-26820 (2019) , https://doi.org/10.1364/OE.27.026807
  2. T.Notake, M.Takeda, S.Okada, T.Hosobata, Y.Yamagata, H.Minamide, "Characterization of all second-order nonlinear-optical coefficients of organic N-benzyl-2-methyl-4-nitroaniline crystal", Scientific Reports 9(1) (2019), DOI: 10.1038/s41598-019-50951-1.
  3. Yamagata, Y., Hirota, K., Ju, J., Wang, S., Morita, S., Kato, J., et al. : “Development of a neutron generating target for compact neutron sources using low energy proton beams”, Journal of Radioanalytical and Nuclear Chemistry 03/2015; 305(3).
  4. Takeda, S., Yamagata, Y., Yamada, N., Hino, M., Hosobata, T., Guo, J., Morita, S., Oda, T., Furusaka, M., “Development of a large plano-elliptical neutron-focusing supermirror with metallic substrates”, Optics Express, 24(12) 12478 (2016) DOI:10.1346/OE.24.012478.
  5. Tamamitsu, M., Kitagawa, Y., Nakagawa, K., Horisaki, R., Oishi, Y., Morita, S., Yamagata, Y., Motohara, K., Goda, K., “Spectrum slicer for snapshot spectral imaging”, Optical Engineering 12/2015; 54(12):123115.


Yutaka YamagataTeam Leader
Koichiro ShirotaSenior Research Scientist
Yusuke TajimaSenior Research Scientist
Yoshiyuki TakizawaSenior Research Scientist
Noboru EbizukaResearch Scientist
Hiroyoshi AokiResearch Scientist
Takuya HosobataResearch Scientist
Satoru EgawaVisiting Researcher
Shinya MoritaVisiting Scientist
Masahiro TakedaTechnical Staff Ⅰ