Dear all,
I'm wondering about an easy triangular lattice of holes-calculation. I
simulated that lattice with radius/lattice constant=0.45 once with
epsilon=11.4 (like e.g. in the book of Joannopoulos) and once with
epsilon=2.45. There appeared a bandgap in tm-polarization between band 2 and
3 with the bigger epsilon, but none with the smaller value. But shouldn't it
look the same (due to the scaling properties of the master equations)?
Or is it only a resolution/mesh-size-problem?
Thanks for your help
Philipp
Above is my ctl-file:
(set! geometry-lattice (make lattice (size 1 1 no-size)
(basis1 (/ (sqrt 3) 2) 0.5)
(basis2 (/ (sqrt 3) 2) -0.5)))
(set! default-material (make dielectric (epsilon 2.45)))
(set! geometry
(list
(make cylinder
(material (make dielectric (epsilon 1)))
(center 0 0 0) (radius 0.45) (height infinity))))
(set! k-points (list (vector3 0 0 0)
(vector3 0 0.5 0)
(vector3 (/ -3) (/ 3) 0)
(vector3 0 0 0)))
(set! k-points (interpolate 128 k-points))
(set! resolution 64)
(set! num-bands 12)
(set! mesh-size 10)
(run-tm)
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