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An Efficient Scalar, Non-Paraxial Beam Propagation Method

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3 Author(s)
Motes, R.A. ; Space Vehicles Doctorate, Air Force Res. Lab., Albuquerque, NM, USA ; Shakir, S.A. ; Berdine, R.W.

A fast non-paraxial beam propagation method (BPM) is developed. Our method is based on expanding the field and the refractive index distributions in azimuthal harmonics, thus replacing a 3-D wave equation with a small number of 2-D wave equations. The method is shown to be substantially faster than standard 3-D finite-difference methods with comparable accuracy and works well with wide-angle waves.

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Lightwave Technology, Journal of  (Volume:30 ,  Issue: 1 )