Nonlinear conversion efficiency in Kerr frequency comb generation
Changjing Bao(University of Southern California), Lin Zhang(Massachusetts Institute of Technology), Andrey B. Matsko(OEwaves (United States)), Yan Yan(University of Southern California), Zhe Zhao(University of Southern California), Guodong Xie(University of Southern California), Anu Agarwal(Massachusetts Institute of Technology), Lionel C. Kimerling(Massachusetts Institute of Technology), Jürgen Michel(Massachusetts Institute of Technology), Lute Maleki(OEwaves (United States)), Alan E. Willner(University of Southern California)
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Abstract
We analytically and numerically investigate the nonlinear conversion efficiency in ring microresonator-based mode-locked frequency combs under different dispersion conditions. Efficiency is defined as the ratio of the average round trip energy values for the generated pulse(s) to the input pump light. We find that the efficiency degrades with growth of the comb spectral width and is inversely proportional to the number of comb lines. It depends on the cold-cavity properties of a microresonator only and can be improved by increasing the coupling coefficient. Also, it can be increased in the multi-soliton state.
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