Ultrahigh Precision Optics Technology Team

Team Leader

Yutaka Yamagata


Photo: Yutaka Yamagata


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Ultrahigh Precision Optics Technology Team,
RIKEN Center for Advanced Photonics

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


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

Neutron focusing mirror for mulitple incident angle reflectmetry at J-PARC BL-16 using low thermal expansion coefficient alloy

Selected Publications

  1. Iwaguchi, S., Nishizawa, A., Chen, Y., Kawasaki, Y., Ishikawa, T., Kitaguchi, M., Yamagata, Y., Wu, B., himizu, R., Umemura, K., Tsuji, K., Shimizu, H., Michimura, Y., and Kawamura, S., "Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds", Phys. Lett. A 458, 128581 (2023).
  2. Aoki, H., Yuki, M., Shimizu, M., Hongoh, Y., Ohkuma, M., and Yamagata, Y., "Agarose gel microcapsules enable easy-to-prepare, picolitre-scale, single-cell genomics, yielding high-coverage genome sequences", Sci. Rep. 12, 17014–17026 (2022).
  3. Heacock, B., Fujiie, T., Haun, W.R.,.Henins, A., Hirota, K., Hosobata, T., Huber, M.G., Kitaguchi, M., Pushin, D.A., Shimizu, H., Takeda, M., Valdillez, R., Yamagata, Y., and Young, A.R.:"Pendellosung interferometry probes the neutron charge radius, lattice dynamics, and fifth forces", Science 373, 1239-1243 (2021).
  4. Yamada, N., L., Hosobata, T., Nemoto, F., Hori, K., Hino, M., Izumi, J., Suzuki, K., Hirayama, M., Kanno, R., and Yamagata, Y.: “Application of precise neutron focusing mirrors for neutron reflectometry: latest results and future prospects” , J. Appl. Cryst. 53 (2020).
  5. Saiki, T., Hosobata, T., Kono, Y., Takeda, M., Ishijima, A., Tamamitsu, M., Kitagawa, Y., Goda, K., Morita, S., Ozaki, S., Motohara, K., Yamagata, Y., Nakagawa, K., and Sakuma, I.: "Sequentially timed all-optical mapping photography boosted by a branched 4f system with a slicing mirror", Opt. Express 28, 31914-31922 (2020).


Yutaka YamagataTeam Leader
Koichiro ShirotaSenior Research Scientist
Yusuke TajimaSenior Research Scientist
Yoshiyuki TakizawaSenior Research Scientist
Tetsuya AoyamaSenior Research Scientist
Noboru EbizukaResearch Scientist
Takuya HosobataSenior Research Scientist
Masahiro TakedaTechnical Staff Ⅰ