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Mohammad Alanzi

Problem with "Num of Stacks" ?

Hi, I would like to ask about the meaning "num of stacks"? , while it may be self-explanetory, please bare with me as I'm a beginner in this field.

 Case 1: If I take an example Superstrate/(AB)^N/Substrate and I set the number of stacks to 10 (N=10), I get a certain reflectivity spectrum. 

Case 2 : If I do the oppsite and instead I repeat the layers in the structure window to 10 that is Superstrate/ABABABABAB/Substrate, then I can only get the same spectrum as in Case 1 if I put the number of stacks to 2?? technically speaking in case 2 the number of stacking should be 1 because I have the structure already repeated in the strucutre window. I have tried this approach in a ternary PhC, and it's the same. Does the staking number mean the number of repeated periods or how many materials types your PhC is made of??? 

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    Alexander V. Kildishev

    Sure then you can set # of stacks to 1, and just run the job normally.

    -AVK

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    Alexander V. Kildishev

    Dear User:

    The # of stacks means the # of periods of repeated materials. So if you have a binary material, with a period such as AB, then a stack of 2 will give you ABAB.

    So your result makes sense to me.

    Thanks, -AVK 

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      Mohammad Alanzi

      Dear Alexander, 

      But if I repeat the layers AB in the strucutre window, Does this mean that I can ignore the number of stacks and put the value to 1 instead? Because I want to study various types of photonic crystals, I want to modify the thickness, refractive index( graded photonic crystals).

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