Abstract

We report the fabrication for the first time of a strontium fluoride (${\mathrm{SrF}}_2$) whispering-gallery mode resonator with quality factor in excess of 1 billion. The millimeter-size disk-resonator is polished until the surface roughness decreases down to a root-mean square value of 1.2 nm, as measured with a vertical scanning profilometer. We also demonstrate that this ultrahigh $Q$ resonator allows for the generation of a normal-dispersion Kerr optical frequency comb at 1550 nm.

© 2015 Optical Society of America

Barium fluoride whispering-gallery-mode disk-resonator with one billion quality-factor

Guoping Lin, Souleymane Diallo, Rémi Henriet, Maxime Jacquot, and Yanne K. Chembo
Opt. Lett. 39(20) 6009-6012 (2014)

Dependence of quality factor on surface roughness in crystalline whispering-gallery mode resonators

Guoping Lin, Rémi Henriet, Aurélien Coillet, Maxime Jacquot, Luca Furfaro, Gilles Cibiel, Laurent Larger, and Yanne K. Chembo
Opt. Lett. 43(3) 495-498 (2018)

On the dispersion management of fluorite whispering-gallery mode resonators for Kerr optical frequency comb generation in the telecom and mid-infrared range

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Opt. Express 23(2) 1594-1604 (2015)

Phase-locking transition in Raman combs generated with whispering gallery mode resonators

Guoping Lin and Yanne K. Chembo
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Giant thermo-optical relaxation oscillations in millimeter-size whispering gallery mode disk resonators

Souleymane Diallo, Guoping Lin, and Yanne K. Chembo
Opt. Lett. 40(16) 3834-3837 (2015)