Continuous phase control of nonlinear polarizability in harmonic generations

TL;DR

This paper introduces a novel method for continuously controlling the phase of nonlinear polarizability in harmonic generation using a geometric Berry phase, enabling arbitrary phase profiles for enhanced optical nonlinear control.

Contribution

It presents a new approach leveraging geometric Berry phase for precise phase control in nonlinear optical processes, expanding capabilities in harmonic generation manipulation.

Findings

Demonstrates continuous phase tailoring of nonlinear polarizability.

Enables arbitrary phase profile design for harmonic generations.

Utilizes geometric Berry phase from spin rotation coupling.

Abstract

We prescribe a novel approach for continuously tailoring the local phase of the nonlinear polarizability which can lead to an arbitrary phase profile for harmonic generations. The introduced phase of the nonlinear polarizability is inherently a geometric Berry phase arising from the spin rotation coupling of light in the nonlinear regime. This approach provides new routes for controlling the optical nonlinear processes.