[17a-P2-1~6] 3.6 Ultrashort-pulse and high-intensity lasers

[17a-P2-6] Dispersion tailoring of a crystalline whispering gallery mode microcavity

〇Mika Fuchida¹, Yosuke Nakagawa¹, Hiroki Itobe¹, Yuta Mizumoto¹, Yasuhiro Kakinuma¹, Takasumi Tanabe¹ (1.Keio Univ.)

Keywords:microcavity, dispersion measurement, precision machining

Optical Kerr combs are generated in microcavities via parametric frequency conversion and it has been investigated for applications in frequency metrology, precise spectroscopy, and signal processing. In order to obtain an frequenccy stabilization with the f-2f self- referencing method, optical Kerr comb with a wide span is needed which requires an anomalous dispersion. We used a computer controlled precise cutting machine to fabricate a dispersion controlled CaF₂ microcavity with an anomalous dispersion to obtain exactly the same dispersion as we obtained in the numerical simulation.