CUDA-based focused Gaussian beams second-harmonic generation efficiency calculator

TL;DR

This paper introduces a CUDA-based simulation package that accelerates the modeling of second-harmonic generation efficiency with focused Gaussian beams, including thermal effects, aiding experimental design and optimization.

Contribution

The paper presents a novel object-oriented CUDA implementation that significantly speeds up SHG efficiency calculations, incorporating thermal effects for the first time.

Findings

Speeds up calculations by nearly 40x without temperature profiles.

Provides accurate modeling of thermal effects and self-heating.

Aids in optimizing SHG experiments and device designs.

Abstract

We present an object-oriented programming (OOP) CUDA-based package for fast and accurate simulation of second-harmonic generation (SHG) efficiency using focused Gaussian beams. The model includes linear as well as two-photon absorption that can ultimately lead to thermal lensing due to self-heating effects. Our approach speeds up calculations by nearly 40x (11x) without (with) temperature profiles with respect to an equivalent implementation using CPU. The package offers a valuable tool for experimental design and study of 3D field propagation in nonlinear three-wave interactions. It is useful for optimization of SHG-based experiments and mitigates undesired thermal effects, enabling improved oven designs and advanced device architectures, leading to stable, efficient high-power SHG.