On Fri, 17 Nov 2006, Vincent Paeder wrote:
I understand that, I just suppose that if I want to simulate a slab of finite thickness, having pmls can be an advantage. In fact I haven't been very clear but what I want to simulate ultimately is a slab of finite thickness. I had obtained results that I didn't understand but these misunderstandings are, I believe, all related to band folding. I just hadn't figured it out before. And I was trying things which were a bit of a nonsense I reckon. Sorry for that! Many thanks for your help,
PMLs (absorbing boundary layers) are unnecessary for the guided modes of a slab. You only really want PML for modes that radiate, e.g. leaky modes above the light line or in a cavity.
Steven _______________________________________________ mpb-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss
