"200-Hz longitudinal-mode linewidth found in a free-running mode-locked Yb:fiber laser" Isao Ito, Takashi Takahashi, Kazuki Fujiwara, Yukiaki Ishida, and Yohei Kobayashi
Optics Express Vol. 30, Issue 15, pp. 28182-28189 (2022)
https://doi.org/10.1364/OE.465296
"Stable CW laser based on low thermal expansion ceramic cavity with 4.9 mHz/s frequency drift" Isao Ito, Alissa Silva, Takuma Nakamura, and Yohei Kobayashi
Optics Express Vol. 25, Issue 21, pp. 26020-26028 (2017)
https://doi.org/10.1364/OE.25.026020
"Piezo-electric transducer actuated mirror with a servo bandwidth beyond 500 kHz"
T Nakamura, S Tani, I Ito, M Endo, Y Kobayashi
Optics express 28 (11), 16118-16125 (2020)
"Direct generation of femtosecond vortex beam from a Yb:KYW oscillator featuring a defect-spot mirror"
Sha Wang, Zhigang Zhao, Isao Ito, and Yohei Kobayashi
OSA Continuum Vol. 2, Issue 3, pp. 523-530 (2019)
https://doi.org/10.1364/OSAC.2.000523
"Magneto-optic modulator for high bandwidth cavity length stabilization"
T Nakamura, S Tani, I Ito, Y Kobayashi
Optics express 25 (5), 4994-5000 (2017)
"Phase-matched frequency conversion below 150 nm in KBe2BO3F2"
Tomoharu Nakazato, Isao Ito, Yohei Kobayashi, Xiaoyang Wang, Chuangtian Chen, and Shuntaro Watanabe
Optics Express Vol. 24, Issue 15, pp. 17149-17158 (2016)
"Offset-free broadband Yb:fiber optical frequency comb for optical clocks"
Takuma Nakamura, Isao Ito, and Yohei Kobayashi
Optics Express 23(15), 19376-19381 (2015)
"Direct 15-GHz mode-spacing optical frequency comb with a Kerr-lens mode-locked Yb:Y2O3 ceramic laser"
M. Endo, I. Ito, Y. Kobayashi
Optics Express, Vol. 23 Issue 2, pp.1276-1282 (2015)
"Injection locking of Yb-fiber based optical frequency comb"
N Kuse, A Ozawa, Y Nomura, I Ito, Y Kobayashi
Optics express 20 (10), 10509-10518 (2012)
"Improvement of Fresnel zone plate beam-profile monitor and application to ultralow emittance beam profile measurements"
H Sakai, M Fujisawa, K Iida, I Ito, H Kudo, N Nakamura, K Shinoe, Takeo Tanaka, Hitoshi Hayano, Masao Kuriki, Toshiya Muto
Physical Review Special Topics-Accelerators and Beams 10 (4), 042801 (2007)
"Electronic correlation in the infrared optical properties of the quasi-two-dimensional κ-type BEDT-TTF dimer system"
T Sasaki, I Ito, N Yoneyama, N Kobayashi, N Hanasaki, H Tajima, T Ito, Y. Iwasa
Physical Review B 69 (6), 064508 (2004).
RECENT PROGRESS OF AN YB-DOPED FIBER LASER SYSTEM FOR AN ERL-BASED LIGHT SOURCE I. Ito et al.
The 50th ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs (ERL2011), Tsukuba, Japan, 16-21 October, 2011
DEVELOPMENT OF AN YB-DOPED FIBER LASER SYSTEM FOR AN ERL PHOTOCATHODE GUN I. Ito, T. Kawasaki, N. Nakamura, D. Yoshitomi, Y. Kobayashi, K. Torizuka, Y. Honda
The 1st International Particle Accelerator Conference (IPAC10), Kyoto, Japan, May 23-28 2010. IPAC10