Velocity-locked solitary waves in quadratic media

TL;DR

This paper reports the experimental discovery of stable three-wave solitary triplets in quadratic media, where energy exchange and velocity mismatch balance to produce velocity-locked solitary waves in a KTP crystal.

Contribution

First experimental demonstration of stable velocity-locked three-wave solitary triplets in quadratic nonlinear media.

Findings

Stable bright-dark-bright solitary triplets observed

Velocity locking determined by energy exchange and velocity mismatch

Triplets excited in a KTP crystal

Abstract

We demonstrate experimentally the existence of three-wave resonant interaction solitary triplets in quadratic media. Stable velocity-locked bright-dark-bright spatial solitary triplets, determined by the balance between the energy exchange rates and the velocity mismatch between the interacting waves, are excited in a KTP crystal.