A new finite-difference-based method for wide-angle beam propagation |
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| Authors: | A Sharma A Agrawal |
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| Affiliation: | Phys. Dept., Indian Inst. of Technol. Delhi, New Delhi, India; |
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| Abstract: | A novel split-step finite-difference method for wide-angle beam propagation is presented. The formulation allows solution of the second-order scalar wave equation without having to make the slowly varying envelope and one-way propagation approximations. The method is highly accurate and numerically efficient requiring only simple matrix multiplication for propagation. |
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