158 citations · 797 across the 22 of their papers we have counts for
20 papers · 1 filter
Mechanically actuated Kerr soliton microcombs
Shun Fujii, Koshiro Wada, Soma Kogure +1
Mode-locked ultrashort pulse sources with a repetition rate of up to several tens of gigahertz greatly facilitate versatile photonic applications such as frequency synthesis, metro…
Versatile tuning of Kerr soliton microcombs in crystalline microresonators
Shun Fujii, Koshiro Wada, Ryo Sugano +4
Microresonator-based optical frequency combs emitted from high-quality-factor microresonators, also known as microcombs, have opened up new horizons to areas of optical frequency c…
Deterministic generation of a perfect soliton crystal with a saturable absorber
Ayata Nakashima, Shun Fujii, Riku Imamura +2
We numerically investigate the deterministic generation of a perfect soliton crystal (PSC) in an optical microresonator functionalized with a saturable absorber (SA). The SA allows…
Coupling of a whispering gallery mode to a silicon chip with photonic crystal
Yuyang Zhuang, Hajime Kumazaki, Shun Fujii +5
We demonstrate the efficient coupling (99.5%) of a silica whispering gallery mode microresonator directly with a silicon chip by using a silicon photonic crystal waveguide as a cou…
Octave-wide phase-matched four-wave mixing in dispersion engineered crystalline microresonators
Shun Fujii, Shuya Tanaka, Mika Fuchida +5
In this Letter, we report phase-matched four-wave mixing separated by over one-octave in a dispersion engineered crystalline microresonator. Experimental and numerical results pres…
Brillouin lasing in coupled silica toroid microcavities
Yoshihiro Honda, Wataru Yoshiki, Tomohiro Tetsumoto +4
We demonstrate stimulated Brillouin scattering (SBS) lasing in a strongly coupled microcavity system. By coupling two silica toroid microcavities, we achieve large mode splitting o…