Spin-Glass Model Governs Laser Multiple Filamentation.

Area of Science:

• Physics
• Nonlinear Optics
• Statistical Mechanics

Background:

• Multiple filamentation in high-power laser beams is a complex phenomenon.
• Understanding and simulating this process is crucial for laser physics research.

Purpose of the Study:

• To develop a novel method for describing multiple filamentation patterns in high-power laser beams.
• To reduce computational time for simulating laser filamentation.

Main Methods:

• Applying statistical physics concepts: self-similarity over nested scales and nearest-neighbor interactions of classical rotators.
• Developing a lattice spin model based on these concepts.
• Comparing the model's results with simulations from the nonlinear Schrödinger equation.

Main Results:

• The lattice spin model accurately reproduces the evolution of intense laser pulses.
• The model provides new insights into the physics of multiple filamentation.
• Computational time is reduced by two orders of magnitude compared to standard methods.

Conclusions:

• A statistical physics approach offers an effective and efficient way to model laser beam filamentation.
• This method simplifies complex nonlinear optical phenomena.
• The lattice spin model presents a significant advancement in computational efficiency for laser physics simulations.