Frequency comb generation in non-centrosymmetric optical microresonators

Jan Szabados; Ingo Breunig; Karsten Buse

doi:10.1117/12.2544657

2 March 2020 Frequency comb generation in non-centrosymmetric optical microresonators

Jan Szabados, Ingo Breunig, Karsten Buse

Proceedings Volume 11266, Laser Resonators, Microresonators, and Beam Control XXII; 112660G (2020) https://doi.org/10.1117/12.2544657
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

Optical frequency combs are a key technology for precision measurements. In the past years, microresonatorbased frequency combs based on third-order χ ⁽³⁾ (Kerr) nonlinearities have attracted significant attention thanks to their small footprint and their wide-ranging applications in fields such as telecommunications, molecular spectroscopy or ultrafast distance measurements. In this contribution, we present a frequency comb generated in a microresonator made of 5% MgO-doped congruent lithium niobate, a non-centrosymmetric crystalline material, employing the generally much stronger second-order χ ⁽²⁾-nonlinearities of such a material via a scheme of cascaded nonlinear processes. This approach paves the way towards reduced pump thresholds for comb generation and comes with intrinsic suitability for self-referencing.

Citation Download Citation

Jan Szabados, Ingo Breunig, and Karsten Buse "Frequency comb generation in non-centrosymmetric optical microresonators", Proc. SPIE 11266, Laser Resonators, Microresonators, and Beam Control XXII, 112660G (2 March 2020); https://doi.org/10.1117/12.2544657

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