Three-dimensional computer model for simulating realistic solid-state lasers.

Area of Science:

• Optics and Photonics
• Computational Physics
• Laser Engineering

Background:

• Accurate simulation of solid-state laser systems is crucial for performance optimization.
• Existing models often struggle with complexities like counterpropagating beams and thermal aberrations.
• Efficient and precise modeling tools are needed for advanced laser design.

Purpose of the Study:

• To develop a novel, accurate, and efficient three-dimensional (3D) computer model for simulating solid-state laser systems.
• To incorporate the effects of counterpropagating laser beams within a saturated gain medium.
• To analytically address thermal lensing and stress birefringence caused by pump absorption.

Main Methods:

• Developed an iterative beam propagation calculation to handle counterpropagating beams and achieve convergence.
• Devised an analytic method to model curved cavity mirrors and gain medium surface deformation due to thermal gradients.
• Integrated thermal lensing and stress birefringence calculations into the 3D model.

Main Results:

• The developed model accurately simulates realistic solid-state laser systems.
• The model demonstrates high efficiency, allowing for simulations on a personal computer.
• Validation confirms the model's accuracy in predicting laser output characteristics.

Conclusions:

• The new 3D computer model provides a validated, accurate, and efficient tool for solid-state laser system simulation.
• The model's ability to handle complex optical and thermal phenomena advances laser design and analysis.
• This computational approach facilitates the development of high-performance laser systems.