Nonlocal explanation of stationary and nonstationary regimes in cascaded soliton pulse compression

TL;DR

This paper investigates how group-velocity mismatch in cascaded quadratic nonlinear materials leads to stationary and nonstationary regimes in soliton pulse compression, with a theory predicting the transition to efficient compression.

Contribution

It introduces a nonlocal explanation for the regimes in cascaded soliton pulse compression and predicts the transition point to the stationary regime.

Findings

The theory accurately predicts the transition to the stationary regime.

Highly efficient pulse compression occurs in the stationary regime.

Two distinct nonlocal regimes are identified based on group-velocity mismatch.

Abstract

We study soliton pulse compression in materials with cascaded quadratic nonlinearities, and show that the group-velocity mismatch creates two different temporally nonlocal regimes. They correspond to what is known as the stationary and nonstationary regimes. The theory accurately predicts the transition to the stationary regime, where highly efficient pulse compression is possible.