ldos-opt · Shaker et al. reproduction

3D SiN slab-gap running

3D octant Maxwell · z-dipole · 1 μm gap (|x|<0.5 λ0) · Si3N4 slab t=0.3846 λ0 (3 cells / half) · design |x|≤3.08, |y|≤1.03 · dof=111360 · crystal a=0.35 · A-a35 fab (R=0.1, λ=3.0, Δη=0.25).

3d-sin-a35 · shifted β=∞ · updated

LDOS / vacuum
1.542
best 1.543 · target ≥ 500
Q
30.52
best 45.2 · target ≥ 50,000
Iteration
76
128 factorizations
Re ω*/ω0
1
wall 2.495e+04 s
Length-scale P
0.5301
λ = 3 · erode/dilate

Seed LDOS/vac=0.717. Starting unshifted.

permittivity
ε(x,y), source as red/white dot. Red band is the frozen vacuum strip when present.
field
|E|² at the evaluation frequency
fragile band
Fragile band ρ_dilate − ρ_erode. Speckle lights up; a clean interface is a thin outline.
history
LDOS enhancement, Q, and length-scale penalty vs Maxwell-matrix factorizations