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. 31. 12. 20274-20274
Keisuke Nakamura, Sho Okubo, Ken Kashiwagi, Hajime Inaba. Broad Visible Frequency Comb with 24-GHz Mode-spacing Based on Mode-Locked Erbium-Fiber Laser. Conference on Lasers and Electro-Optics. 2019
High speed optical millimeter sweeper using laser diode with direct current modulation and MZ interferometer
(International Conference on Optics-photonics design & fabrication (ODF 2010) 2010)