Dear all users.
Hello, all.
I am a new user in meep and want to plot band diagram of photonic crystal
(PHC) in meep.
After taking challenging time, I eventually succeeded to compute band
structure of 3D PHC slab.
However, unfortunately, I can not sure the result what I got. because I am
a beginner.
I would appreciate if anyone could send me an example code of 2D or 3D
photonic crystal structure.
Or please check my code below.
Sincerely.
-------------- square lattice PHC slab code ------------------
(define-param h 0.4) ; the thickness of the slab
(define-param eps (* 2.0 2.0)) ; the dielectric constant of the slab
(define-param loweps 1.0) ; the dielectric constant of the substrate
(define-param r 0.2) ; the radius of the holes
(define-param supercell-h 4) ; height of the supercell
; triangular lattice with vertical supercell:
(set! geometry-lattice (make lattice (size 1 1 supercell-h)))
(set! geometry
(list (make block (material (make dielectric (epsilon loweps)))
(center 0 0 0)
(size infinity infinity supercell-h))
(make block (material (make dielectric (epsilon eps)))
(center 0) (size infinity infinity h))
(make cylinder (material air)
(center 0) (radius r) (height supercell-h))))
(define-param k-interp 16)
(define-param fcen 0.5)
(define-param df 1)
(set! sources
(list
(make source
(src (make gaussian-src (frequency fcen) (fwidth df)))
(component Hz) (center 0.37 0.16)
)
)
)
(run-k-points 300 (interpolate k-interp (list (vector3 0 0 0) (vector3 0.5
0 0)(vector3 0.5 0.5 0) (vector3 0 0 0))))
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