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diffraction in far filed

Posted 26 mar 2018, 10:48 GMT-4 0 Replies

Safoura N
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Hello, I am trying to model the propagation of light ( lambda=250 um) in a amplitude grating and calculate diffraction intensity in the far field. There are 3 materials in the structure (mat 1: air, mat2 with n=2 & mat3: an opaque material). The model approximately follows the Plasmonic Wire Grating tutoriaI. I defined periodic port on the top side and floquet periodicity both sides of the model. I have attached the figures of the model.

1) How can I define wall as opaque domains? Which material can I use as an opaque surface? 2) Is it possible that I use far filed domain and put far field calculation on the observer line? 3) How far should be placed "cut line" from grating structure?

Thanks in advance for any suggestions.

Safoura

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0 Replies Last Post 26 mar 2018, 10:48 GMT-4
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