simpleFDTD

A browser-based Finite-Difference Time-Domain (FDTD) simulation built using WebAssembly

Select a shape, size, material, and environment to get started

For more information, see here

Ellipse Rectangle Triangle Empty

X:

nm

Y:

nm

Ellipse Geometry Diagram

Rectangle Geometry Diagram

Rectangle Geometry Diagram

Note that the simulation domain is 3000 nm by 2500 nm

Aluminum Gold Silver Copper Silica Silicon Custom

$$ \epsilon(\omega) = \epsilon_{\infty} - \frac{\sigma}{i \omega} + \sum_{p=1}^{N_{p}} \left[ \frac{c_{p}}{-i \omega - a_{p}} + \frac{c_{p}^{*}}{-i \omega - a_{p}^{*}} \right] \href{./about.html#dielectricFunction}{(1)} $$

\( \epsilon_{\infty} \):

\( \sigma \) (eV):

\( \mu_{r} \):

\( N_{p} \):

\( a_{1} \) (eV): Re

Im

\( c_{1} \) (eV): Re

Im

Refractive Index:

Pre-computed data is only available from 1.0 to 4.0 in increments of 0.1 (hence the restrictions).

On most computers this takes ~1.5 minutes

Enable Adaptive Timing See the about page for a description of adaptive timing.

Download data in CSV format (in whichever scale it is plotted as)

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