Plane wave scattering on a stratified layer Computation using Lumerical GIST, Prof. Yong-Gu Lee 20141009

Objective 100nm thick gold layer is illuminated with a plane wave @1070nm p-polarized in the orthogonal direction. Compute the total electric field distribution.

Lauch Lumerical FDTD and start from an empty object layout, create a region Toolbar: Simulation->Region Object tree: FDTD->Right mouse 2D simulation Medium is water with index of refraction 1.33 X span 100nm, Y span 200 nm

Create a mesh of particular width and depth Toolbar: Simulation->Mesh Object tree: mesh->Right mouse X span 100nm, Y span 200 nm

Create a gold substrate Double click Quadrilateral X span 150nm, Y span 100 nm

Set boundary conditions Bloch boundary condition in the x-axis

Set the material for the substrate Au (Gold) – Johnson and Christy

Create a plane wave

General property of the plane wave

The origin of the plane wave and the applied space

Set the frequency (1070nm) of the plane wave

The overall layout and graphical nomenclature

Point monitor

Ready to run

Oops material explorer appears… Press fit and plot

Second oops Drexler(process 0): The program terminated due to an error:There is no possible parallel processor layout that can be used because the simulation volume is too small. Please reduce the number of processors or contact Lumerical Technical Support for more information.

Mesh resolution problem Change x mesh from 15 nm to 1 nm

After successful run visualize E.

0.361504 at the gold/medium interface

Compare this with the analytic solution