Oblique-incidence, arbitrary-profile wave injection for electromagnetic simulations.

Area of Science:

• Computational Electromagnetics
• Numerical Simulation
• Plasma Physics

Background:

• Wave injection in electromagnetic codes typically requires analytical field profiles at domain boundaries.
• Handling nonparaxial beams, where profiles are known at arbitrary planes, necessitates pre-processing for boundary condition application.
• Existing methods face challenges in efficiently propagating field profiles to simulation boundaries.

Purpose of the Study:

• To develop and implement a parallel numerical technique for propagating electromagnetic field profiles.
• To enable accurate wave injection for nonparaxial beams in electromagnetic simulations.
• To integrate this technique into the Maxwell-Vlasov particle-in-cell code Smilei.

Main Methods:

• A parallel numerical method is presented for propagating field profiles between arbitrary tilted planes and simulation domain boundaries.
• The technique involves calculating the field profile at the boundary from its profile at another plane.
• Implementation within the Smilei code, a Maxwell-Vlasov particle-in-cell code.

Main Results:

• The developed technique successfully propagates electromagnetic field profiles for nonparaxial beams.
• Accurate wave injection at the simulation domain boundary is achieved.
• The parallel implementation ensures efficient computation for complex wave profiles.

Conclusions:

• The presented parallel numerical technique effectively addresses the challenge of wave injection for nonparaxial beams.
• This method enhances the capability of electromagnetic codes like Smilei for advanced simulations.
• The technique facilitates more accurate and efficient modeling of wave-particle interactions.