Dear meep user,
I am beginner in meep. I want to simulate the thin film.
I want to learn transmission and the reflection when light is put.
I made the model while seeing the tutorial.
I am suitable of this model made for myself or not confident.
It suitable in this as the model?
My best regards.
Input light ramda = 500nm = 1.6678204
The glass substrate n = 1.52 = epsilon = 2.3104
Thin film n = 1.36 = epsilon = 1.8496
image
|----------------|<- refl(reflection)
| |
| Air |
| |
| Light sourse |
| |
|----------------|
| Thin film |
|----------------|
| |
| The glass |
| substrate |
| |
|----------------|<- trans(transmission)
-----------------------------------------------------------------------------
(define-param sx 16) ; size of cell in X direction
(define-param sy 32) ; size of cell in Y direction
(set! geometry-lattice (make lattice (size 16 32 no-size)))
(define-param w 1) ;
(define-param no-bend? true) ;
(set! geometry
(list
(make block
(center 0 -13)
(size infinity 6 infinity)
(material (make dielectric (epsilon 2.3104)))) ; n=1.52
(make block
(center 0 -9.975)
(size infinity 0.05 infinity) ; thin film 50nm
(material (make dielectric (epsilon 1.8496)))))) ;n=1.36
(use-output-directory "trre_27_010")
(define-param fcen 1.6678204) ; pulse center frequency ramda=500nm
(define-param df 0.5) ; pulse width (in frequency)
(set! sources (list
(make source
(src (make gaussian-src (frequency fcen) (fwidth df)))
(component Ez)
(center 0 0)
(size 0 w))))
(define-param reso 10); resolution
(set! pml-layers (list (make pml (thickness 3.0))))
(set-param! resolution reso)
(define-param nfreq 1001) ; number of frequencies at which to compute flux
(define trans ; transmitted flux
(add-flux fcen df nfreq
(make flux-region
(center 0 -14) (size 32 0))))
(define refl ; reflected flux
(add-flux fcen df nfreq
(make flux-region
(center 0 14) (size 32 0))))
(if (not no-bend?) (load-minus-flux "refl-flux" refl))
(run-sources+ 500 (at-beginning output-epsilon))
(if no-bend? (save-flux "refl-flux" refl))
(run-sources+
(stop-when-fields-decayed 50 Ez
(vector3 0 0))
1e-3)
(display-fluxes trans refl)
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