Two-dimensional periodic and quasiperiodic spatial structures in microchip laser resonator

TL;DR

This paper investigates the formation of 2D periodic and quasiperiodic spatial patterns in microchip laser resonators with high Fresnel numbers using numerical modeling techniques.

Contribution

It introduces a numerical modeling approach to analyze complex 2D laser patterns considering nonlinear gain, inversion relaxation, and diffraction effects.

Findings

Identification of conditions leading to periodic and quasiperiodic patterns.

Numerical evidence of pattern formation in high Fresnel number microchip lasers.

Insights into the role of nonlinear gain and diffraction in pattern dynamics.

Abstract

The spatially periodic 2D patterns at output mirror of solid state microchip laser with high Fresnel number (100-1000) are discussed in view of numerical modeling with split-step FFT code comprising nonlinear gain, relaxation of inversion and paraxial diffraction.