ldos-opt · Shaker et al. reproduction

3D SiN free design running

3D octant Maxwell · z-dipole · 1 μm gap (|x|<0.5 λ0) · Si3N4 slab t=0.1923 λ0 (2 cells / half) · design |x|≤2.45, |y|≤0.67 · dof=120064 · free in-plane · A-a35 fab (R=0.1, λ=3.0, Δη=0.25).

3d-free · shifted β=∞ · updated

LDOS / vacuum
3.191
best 3.468 · target ≥ 500
Q
34.98
best 43.39 · target ≥ 50,000
Iteration
163
291 factorizations
Re ω*/ω0
1
wall 5.797e+04 s
Length-scale P
0.3572
λ = 3 · erode/dilate

Seed LDOS/vac=1.760. 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