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Sech-squared Pockels solitons in the microresonator parametric down-conversion.

Dmitry V Skryabin

|October 7, 2021

Summary

We found a new optical soliton solution linked to the Pockels effect in microresonators. This Pockels soliton differs from the Kerr soliton, with distinct spectral profiles and powers, matching recent experiments.

Area of Science:

Nonlinear Optics
Quantum Optics
Photonics

Background:

Optical microresonators enable frequency comb generation.
Quadratic nonlinearities are crucial for parametric processes.
Kerr effect-based solitons are well-studied.

Purpose of the Study:

To present a novel sech-squared-soliton solution.
To associate this solution with the optical Pockels effect.
To differentiate it from existing Kerr solitons.

Main Methods:

Theoretical analysis of parametric down-conversion.
Derivation of soliton solutions in quadratic nonlinear media.
Comparison with cascaded-Kerr soliton properties.

Main Results:

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An explicit sech-squared-soliton solution for the Pockels effect was derived.
Predicted differences in spectral profiles and powers between Pockels and Kerr solitons.
Pump power threshold for Pockels solitons aligns with experimental data.

Conclusions:

The Pockels effect can generate distinct solitons in microresonators.
The derived soliton solution offers new insights into nonlinear optical phenomena.
This work bridges theoretical predictions with experimental observations in nonlinear optics.