User Tools
app:diffraction_grating
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
app:diffraction_grating [2018/01/30 12:57] pklapetek |
app:diffraction_grating [2018/01/30 12:58] pklapetek |
||
|---|---|---|---|
| Line 12: | Line 12: | ||
| If we consider x and y as axes on the screen where diffraction pattern is seen, the intensity space distribution varies as | If we consider x and y as axes on the screen where diffraction pattern is seen, the intensity space distribution varies as | ||
| - | {{ :app:eq_aperture.png?400 |}} | + | {{ :app:eq_aperture.png?300 |}} |
| where p and q are aperture dimensions, r is distance from aperture to screen center, A is related to incident field amplitude and k=2π/λ where λ is the incident light wavelength. | where p and q are aperture dimensions, r is distance from aperture to screen center, A is related to incident field amplitude and k=2π/λ where λ is the incident light wavelength. | ||
| + | {{ :app:a_grating_gratingmodel.png?300|}} | ||
| Image on the right shows scheme of the computational volume used for the simulation (a cross-section). We use a parallelepiped bounded by simple absorbing boundary conditions. A plane wave source is established using Total/Scattered field approach (TSF), but only single plane is used to excite the plane wave (all the other faces are skipped). Grating material is introduced as vector material - by using one perfect electric conductor (PEC) parallelepiped to create thin non-transparent plate and one smaller vaccum parallelepiped to create a rectangular hole in it. | Image on the right shows scheme of the computational volume used for the simulation (a cross-section). We use a parallelepiped bounded by simple absorbing boundary conditions. A plane wave source is established using Total/Scattered field approach (TSF), but only single plane is used to excite the plane wave (all the other faces are skipped). Grating material is introduced as vector material - by using one perfect electric conductor (PEC) parallelepiped to create thin non-transparent plate and one smaller vaccum parallelepiped to create a rectangular hole in it. | ||
app/diffraction_grating.txt · Last modified: 2018/08/29 12:25 by pklapetek
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial 4.0 International
