Hi all, Thanks for the previous output... I think I'm a step closer to getting Meep units. I have a few quick questions about geometries and PML.
The code has been attached, or can be seen at: http://pastebin.us/8034 First of all, I defined a dielectric to be a block 9.7 mm wide and 18 microns thick centered at the origin, but it looks like a block attached to a squished circle, as can be seen in attachment ez-1.png. I wonder what is wrong here: changing the block size doesn't do much to the geometry, but changing the resolution scales the images appropriately. Is there an issue with specifying blocks with very large (but not infinite) aspect ratios? On a different note, what is the difference between using 'no-size' and zero, when specifying source widths, geometries, flux planes etc? Lastly, is there such a thing as having too much PML if your cell size is large enough for the wavelengths under consideration (10x lambda in meep units)? It's not easy to tell when the PML is working when looking at a sequence of png images (or a gif animation), so I would prefer to err on the side of caution and put "too much" PML instead of too little. I recall in a previous thread that pml = 0.1*lambda was too thin. Is there a general guideline for PML thickness? Thanks again. Ashifi.
geometry.ctl
Description: application/extension-ctl
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