科研之友
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摘要
In this work, we proposed coaxial structure MgF2 crystal micro-disk resonators with ultra-high quality factors. Based on such a structure, two wide bands of Kerr optical frequency combs were separately generated in two adjacent micro-disk resonators with a repetition rate of approximately 44.11 GHz. The comb lines reached up to 500 within an approximately 250 nm wavelength band. This compact coaxial structure can be used to generate multi-combs with a low difference in repetition rate and applied to dual-comb spectral measurement applications.
