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Journal Article

Laser-machined ultra-high-Q microrod resonators for nonlinear optics

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Del'Haye, P., Diddams, S. A., & Papp, S. B. (2013). Laser-machined ultra-high-Q microrod resonators for nonlinear optics. Applied Physics Letters, 102(22): 221119. doi:10.1063/1.4809781.

Cite as: https://hdl.handle.net/21.11116/0000-0006-5925-D
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 x 10(9). Demonstrated resonator diameters are in the range between 170 mu m and 8mm (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.