i download one matlab file from here to calculate the modes in laser, Laguerre-Gauss modes but it was not working properly. So i wrote my own function. It is pretty simple function, i hope it is efficient as well. i used it and post the result i got.
It does work, but the speed it works too slowly. the 'kummer' is better.
but i need your help btamene... when i calculate the LG mode, for even mode indexes l, it looks reasonable; however for odd l, there's singular points in the phase pattern. what's the problem? thanks a lot!
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