On Sat, 10 Mar 2007, Christine Kreuzer wrote:
What are the units of the integration volume if I integrate over the whole computational cell? If I want to calculate the mode volume, for example. I use (integrate-field-function) to get the integral(eps*|E|²) over the whole computational cell and (max-abs-field-function) to get max(eps*|E|²). Dividing integral through max gives the modal volume, but in which units? In a³?
Yes, the units are a^3.In general, Meep tries to give you the illusion that you are working with continuous functions in your chosen spatial units. So, when you compute the integral, it really does an (approximate) integral over space (via a trapezoidal rule).
Steven
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