A Need help implementing finite difference method for BPM

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The discussion focuses on seeking assistance with implementing the finite difference method for the Beam Propagation Method (BPM) based on a specific paper. The original poster requests shared code from others who have successfully implemented this method, as their own code is not functioning as intended. Participants express skepticism about the cost of the referenced article and highlight the challenge of providing comprehensive guidance on the finite-element method due to its complexity. The conversation emphasizes the need for specific questions and detailed information to facilitate effective support. Overall, the thread underscores the importance of collaboration and sharing resources in technical programming challenges.
yashabyadav
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I am trying to apply finite difference scheme for Beam propagation method by following this paper.

I was wondering if anyone can share their code if they have implemented this method. I can share my code which is not working as expected and can get some insights if possible.
 
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yashabyadav said:
I am trying to apply finite difference scheme for Beam propagation method by following this paper.

I was wondering if anyone can share their code if they have implemented this method. I can share my code which is not working as expected and can get some insights if possible.
Please post a full description and your questions.

a) The article you linked to costs $40 and I doubt that anybody is willing to pay this.
b) Teach me the finite-element method is far too broad. We cannot provide entire lectures.
 

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