2D DNG negative refraction

[meisam haghparast]

dng_negative

hi
I am modeling a 2D FDTD code between freespace and a DNG media to
visualize the negative refraction
but there is some problem and the negartive refraction won't occur
can anybody help me?
have anybody ever run same simulation?

 

[wandering heart]

2d refraction model

Maybe u should provide more details abt ur code or somewhat else, otherwise people can't help u.

 

[meisam haghparast]

Maybe u should provide more details abt ur code or somewhat else, otherwise people can't help u.

I am going to model snell law between freespace and a DNG media
the propagation polarization is TE
I asked if anybody did it before

 

[rrumpf]

You may have a mistake in how you are making the refractive index negative. Are you setting both mu and eps to a negative value? What values are you using? How are you visualizing your fields?

-Tip

 

[meisam haghparast]

You may have a mistake in how you are making the refractive index negative. Are you setting both mu and eps to a negative value? What values are you using? How are you visualizing your fields?

-Tip

I am modeling both mu and epsilon by drude model and both are negative

 

[rrumpf]

Hmmm... It should work for you. As an intermediate step, try removing the Drude model and just set mu and eps both equal to a constant -1. See what happens. If you still do not see a negative refraction effect, then something else is wrong.

-Tip