Learning Forum

[Masataka Ando]

I am doing 3D FDTD simulation on Ansys Lumerical 2021 R1.2 Finite Difference IDE.

i want to output data of e2 as a 2D array. the desired data can manually be  obtained by exporting the data when, selecting the TimeMonitor from the "Objects Tree", selecting visualize > E, changing the "Scalar operations" to abs2 and double clicking "view data. i can get data of different times by manually changing the value of "t" on "Parameters".

I want to achieve this automatically by using lsf script.

i was able to output the data to e2 when the index of the parameter "t" is 1 by using the script below. 

E = getresult("monitor1","E");

E_2=E.E2;

 How can I save the results of |E|^2 when the index of the parameter t is other than 1?

[Guilin Sun]

 

You have already got E2 the intensity, which is a 4D matrix: xyz and time.

You can use “pinch” to remove the singleton dimension.  pinch – Script command

if you are using a point time monitor, after “pinch”, it will be a 1D matrix, which is the time.

If you use a line time monitor, the result will be 2D.

E = getresult(“monitor_1″,”E”);

E_2=E.E2;

E2=pinch(E_2);

time=E.t;

plot(time, E2,”time (s)”,”Intensity”);

E1 = getresult(“monitor_3″,”E”);

E2_3=pinch(E1.E2);

x=E1.x;

t=E1.t;

image(x*1e6,t*1e15,E2_3,”x um”,”time fs”);

you can save the result in ldf format: savedata – Script command

or matlab format: matlabsave – Script command

txt format: write – Script command

 

As for the data, you can simply save the dataset, which will be easy for you later, or each of the data matrix, eg, E2,x,t etc.