Naoya Ozawa, Keisuke Nakamura, Yasuhiro Sakemi. Conception, modelling, and characterization of a fiber amplifier with a simple and easy-to-repair configuration intended for the use in harsh environments. EPJ Techniques and Instrumentation. 2024
Keisuke Nakamura, Ken Kashiwagi, Sho Okubo, Hajime Inaba. Erbium-doped-fiber-based broad visible range frequency comb with a 30 GHz mode spacing for astronomical applications. Optics Express. 2023
K Nakamura, S Nagase, T Nakashita, T Hayamizu, T Aoki, H Nagahama, N Ozawa, M Sato, K Yamane, M Fukase, et al. Development of a Laser Frequency Stabilization and an Optical Transmission System for the Francium Electric Dipole Moment Search. Journal of Physics: Conference Series. 2022. 2249. 1. 012010-012010
Tomohiro Hayamizu, Hiromitsu Haba, Keisuke Nakamura, Takatoshi Aoki, Hiroki Nagahama, Kazuo Tanaka, Naoya Ozawa, Miki OHTSUKA, Yasuhiro Sakemi. Development of Ultracold Francium Atomic Sources Towards the Permanent EDM Search. Few-Body Systems. 2022. 63. 1
Keisuke Nakamura, Shintaro Nagase, Teruhito Nakashita, Tomohiro Hayamizu, Takatoshi Aoki, Hiroki Nagahama, Naoya Ozawa, Motoki Sato, Kazeki Yamane, Mirai Fukase, et al. 400-m-Long Polarization-Maintaining Fibers for Magneto-Optical Trapping of Francium Atoms. Proceedings of the 2022 Conference on Lasers and Electro-Optics Pacific Rim. 2022