Hi Ozgur,
If you are referring to the second edition, then this corresponds to a
structure without cavity or PhC waveguide, so no need for a supercell,
(size 1 1) should do.
Regards,
Frederic Brossard
On 01/12/2010 18:27, Özgür Önder KARAKILINÇ wrote:
Hi everyone
I am trying to page 76, figure 10 of "photonic crystals molding the flow
of light" book.
But I did not obtain same gap result.
my ctl code is below.
could you show me where is my mistake?
thanks.
------------------------------
;;phc book page 76 fig.10
(define-param epssub 13) ; dielectric substrate
(define-param epsair 1)
(define-param r 0.48) ; the radius of the holes
(define-param supercell-y 31) ; the (odd) number of lateral supercell periods
(set! default-material (make dielectric (epsilon epssub)))
; triangular lattice with vertical supercell:
(set! geometry-lattice (make lattice (size 1 supercell-y no-size)
(basis1 (/ (sqrt 3) 2) 0.5)
(basis2 (/ (sqrt 3) 2) -0.5)))
;;;;;;;;;;;;;;;;;;;;;;;; Geometry
(define-param a 1)
(define-param d (* (/ (sqrt 3) 2) a))
(set! geometry
(append
(geometric-objects-lattice-duplicates
(list
(make cylinder (center 0 0) (radius r) (height infinity)
(material (make dielectric (epsilon epsair)))
)
(make cylinder (center (* .5 a) (* -1 d)) (radius r)
(height infinity)
(material (make dielectric (epsilon epsair)))
)
)
1 (* a (sqrt 3) a))
))
; 1st Brillouin zone of a triangular lattice:
(define Gamma (vector3 0 0 0))
(define K' (lattice->reciprocal (vector3 0.5 0 0))) ; edge of Brillouin zone.
(define-param only-K false) ; run with only-K=true to only do this k-point
(define-param k-interp 9) ; the number of k points to interpolate
(if only-K
(set! k-points (list K))
(set! k-points (interpolate k-interp (list Gamma K'))))
(define-param res 32)
(set! grid-size (vector3 res (* res supercell-y) 1))
(define-param extra-bands 21)
(set! num-bands (+ supercell-y extra-bands))
(set-param! mesh-size 7)
(run-tm)
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