On Jul 28, 2008, at 12:41 PM, Yiling Qi wrote:
I would like to simulate a continuous source propagating in a
photonic crystal. Instead of defining run period by an exact
number(like 500 times period), I am wondering if I could monitor the
source by find one point in the area and run until like electric
field at this point to be steady? But now my problem is, how could I
get the minimum and maximum field of this point and then give run-
until an argument? Or do you have better methods for my problem?
Yes, that's certainly possible; enabling this kind of thing is
precisely the purpose of the run-until function taking an arbitrary
function as input for the stopping criterion. The built-in stop-when-
fields-decayed function does something very much like what you want,
except it stops when the fields have decayed to zero. I would suggest
looking in the meep.scm file and see how the stop-when-fields-decayed
function is implemented, and base your function on this.
Regards,
Steven G. Johnson
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