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docs:become [2020/03/29 12:18] pklapetek |
docs:become [2020/04/02 11:47] pklapetek |
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{{:docs:become_grating_2d_normalised.png?600|}} | {{:docs:become_grating_2d_normalised.png?600|}} | ||
- | It can be seen that there is a slight asymmetry in the result which needs to be analyzed, probably due to wrong placement of far-field points. The average intensity of the s+1 and s-1 diffraction orders is 0.183 of the incident intensity. | + | When inspected in detail, it can be seen that there is a slight asymmetry in the result which needs to be analyzed, probably due to wrong placement of far-field points. The average intensity of the s+1 and s-1 diffraction orders is 0.178 of the incident intensity for the default silver model (not the Become one). |
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+ | {{:docs:becomefit.png?600|}} | ||
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+ | List of different settings and results: | ||
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+ | * metal setting: 6 1.03583 0 1.37537e+16 1.25733e+14 2.1735 -0.504659 7.60514e+15 4.28131e+15 0.554478 -1.48944 6.13809e+15 6.62262e+14 means n=(0.129 + 3.87i) and leads to first order diffraction of 0.172 | ||
+ | * default metal setting: 6 0.89583 0 13.8737e15 0.0207332e15 1.3735 -0.504659 7.59914e15 4.28431e15 0.304478 -1.48944 6.15009e15 0.659262e15 means n=(0.036 + 4.147i) and leads to first order diffraction of 0.178 | ||
===== 3D calculation ===== | ===== 3D calculation ===== | ||
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The aspects that need further investigation or tuning: | The aspects that need further investigation or tuning: | ||
- | * polarisation correctness (TE mode is p-polarisation) | ||
* far-field calculation postprocessing speedup, now very slow, printing many debugging data. | * far-field calculation postprocessing speedup, now very slow, printing many debugging data. | ||
- | * cross-check metal refractive index (now relying on pre-fitted database data) | + | * cross-check metal refractive index (now relying on pre-fitted database data, which is wrong) |
- | * correct placement of far field points (get rid of the slight asymmetry observed) | + | * there is still slight asymmetry |
* evaluate the voxel size vs. speed vs. accuracy for the benchmark. | * evaluate the voxel size vs. speed vs. accuracy for the benchmark. | ||