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Optics Express|May 15, 2020
40 GHz continuous, precise, and low power-loss laser frequency sweep using an electro-optic modulatorSho Okubo, Naoki Kuramoto, Hajime InabaOptics Express|March 18, 2026
Complementary hybrid dual-comb spectroscopyKen Kashiwagi, Sho Okubo, Hajime InabaOptics Express|June 29, 2023
Erbium-doped-fiber-based broad visible range frequency comb with a 30 GHz mode spacing for astronomical applicationsKeisuke Nakamura, Ken Kashiwagi, Sho Okubo, et al.Optics Express|November 23, 2021
Cosine similarity for quantitatively evaluating the degree of change in an optical frequency comb spectraTomoya Irimatsugawa, Yukiko Shimizu, Sho Okubo, et al.Optics Express|November 24, 2011
Absolute frequency list of the ν3-band transitions of methane at a relative uncertainty level of 10(-11)Sho Okubo, Hirotaka Nakayama, Kana Iwakuni, et al.Optics Express|May 3, 2018
Multi-branch fiber comb with relative frequency uncertainty at 10<sup>-20</sup> using fiber noise difference cancellationKen Kashiwagi, Yoshiaki Nakajima, Masato Wada, et al.Optics Express|February 25, 2022
Ultra-precise determination of thicknesses and refractive indices of optically thick dispersive materials by dual-comb spectroscopyKana A Sumihara, Sho Okubo, Makoto Okano, et al.Optics Express|December 28, 2019
Polarization-sensitive dual-comb spectroscopy with an electro-optic modulator for determination of anisotropic optical responses of materialsKana A Sumihara, Sho Okubo, Kenichi Oguchi, et al.Optics Express|February 3, 2016
Near-infrared broadband dual-frequency-comb spectroscopy with a resolution beyond the Fourier limit determined by the observation time windowSho Okubo, Yi-Da Hsieh, Hajime Inaba, et al.Optics Express|March 4, 2020
Iodine-stabilized laser at telecom wavelength using dual-pitch periodically poled lithium niobate waveguideKohei Ikeda, Sho Okubo, Masato Wada, et al.Pageof 5