Octave-wide phase-matched four-wave mixing in dispersion-engineered crystalline microresonators

Shun Fujii, Shuya Tanaka, Mika Fuchida, Hikaru Amano, Yuka Hayama, Ryo Suzuki, Yasuhiro Kakinuma, Takasumi Tanabe

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


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 presented here confirm that primary sidebands were generated with a frequency shift up to 140 THz, and that secondary sidebands formed a localized comb structure, known as a clustered comb in the vicinity of the primary sidebands. A theoretical analysis of the phase-matching condition validated our experimental observations, and our results agree well with numerical simulations. These results offer the potential to realize a frequency-tunable comb cluster generator operating from 1 μm to mid-infrared wavelengths with a single and compact device.

Original languageEnglish
Pages (from-to)3146-3149
Number of pages4
JournalOptics Letters
Issue number12
Publication statusPublished - 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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