Two-cycle pulse generation from mode-locked Kerr frequency combs based on an integrated dispersion-flattened micro-resonator
Author(s)Zhang, Lin; Agarwal, Anuradha Murthy; Kimerling, Lionel C.; Michel, Jurgen
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Kerr frequency comb generation from a nonlinear high-Q resonator becomes an interdisciplinary research topic emerging from nonlinear optics, integrated photonics, and ultrafast optics. We show that ultrashort cavity solitons can be generated from a mode-locked Kerr frequency comb in a dispersion-engineered nonlinear microresonator. The spectral flatness of the comb is greatly improved by making the cavity soliton as short as two optical cycles, with a comb line power variation below 20 dB over an octave-spanning bandwidth from near infrared to mid infrared, while excellent spectral coherence is achieved by soliton-based mode locking. It is shown by simulation that the two-cycle solitons are robust to the wideband soliton perturbation effects such as all-order dispersion, frequency-dependent Q-factor, dispersive wave generation, Kerr self-steepening, and stimulated Raman scattering. The pump power used to generate an octave-spanning combs can be significantly reduced when a dispersion profile with four zero-dispersion frequencies, which paves the way to achieve a fully integrated frequency comb generator on a chip.
DepartmentMassachusetts Institute of Technology. Materials Processing Center; Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Microphotonics Center
Proceedings of SPIE--the International Society for Optical Engineering ; vol. 8960
Society of Photo-Optical Instrumentation Engineers (SPIE)
Zhang, Lin, Anuradha M. Agarwal, Lionel C. Kimerling, and Jurgen Michel. “Two-Cycle Pulse Generation from Mode-Locked Kerr Frequency Combs Based on an Integrated Dispersion-Flattened Micro-Resonator.” Edited by Alexis V. Kudryashov, Alan H. Paxton, Vladimir S. Ilchenko, Lutz Aschke, and Kunihiko Washio. Laser Resonators, Microresonators, and Beam Control XVI (March 4, 2014). (Proceedings of SPIE--the International Society for Optical Engineering ; vol. 8960). SPIE © 2014.
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