The theory of photorefractive resonance for localized beams in two-carrier photorefractive systems

TL;DR

This paper extends the theory of two-carrier photorefractive resonance to low non-harmonic illumination, analyzing how background intensity affects the space charge field profile and explaining experimental results in InP:Fe.

Contribution

It provides a theoretical extension for low non-harmonic illumination in two-carrier photorefractive systems, specifically applied to InP:Fe.

Findings

Space charge field profile varies with background intensity.

Resonance effects influence amplitude, width, and position of the field.

The theory explains experimental observations in InP:Fe.

Abstract

This paper extends the existing theory of two carrier photorefractivity resonance, which is generally applied to Iron doped Indium Phosphide (InP:Fe), to the case of low non-harmonic illumination. The space charge field profile is computed, and the variations of its amplitude, width and position are determined as functions of the background intensity. The effect of photorefractive resonance on these quantities is evidenced, contributing to the understanding of published experimental results in InP:Fe.