Optical whispering-gallery microresonators are useful tools in microphotonics and non-linear optics at very low threshold powers. Here, we present details about the fabrication of ultra-high-Q whispering-gallery-mode resonators made by CO2-laser lathe machining of fused-quartz rods. The resonators can be fabricated in less than 1 min and the obtained optical quality factors exceed Q = 1 × 109. Demonstrated resonator diameters are in the range between 170 μm and 8 mm (free spectral ranges between 390 GHz and 8 GHz). Using these microresonators, a variety of optical nonlinearities are observed, including Raman scattering, Brillouin scattering, and four-wave mixing.
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Research Article| June 07 2013
Laser-machined ultra-high-Q microrod resonators for nonlinear optics
Special Collection: On-Chip Mid-Infrared and THz Frequency Combs for Spectroscopy
Scott A. Diddams;
Pascal Del'Haye, Scott A. Diddams, Scott B. Papp; Laser-machined ultra-high-Q microrod resonators for nonlinear optics. Appl. Phys. Lett. 3 June 2013; 102 (22): 221119. https://doi.org/10.1063/1.4809781
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