Optics Letters · 1993 · 34 citations · 3 references
EngineeringComputational EngineeringElectrical EngineeringComputational MechanicsFinite Element AnalysisFinite Element MethodsBeam TheoryFinite Element DiscretizationFinite Element FormulationScattering ProblemsWave PropagationWave ReflectionBeam Finite Element AnalysisBeam Finite Element FormulationBeam PropagationBeam Wave PropagationBoundary Condition AnalysisPlane Wave PropagationPlane-wave ApproximationTransparent Boundary Conditions
We propose a transparent boundary for the finite-element beam-propagation method to analyze the beam propagation in a finite computational window. In this method, a transparent boundary condition is derived by assuming a beam to be a plane wave in the vicinity of a virtual boundary, which eliminates undesirable reflections from a virtual boundary.
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