Near field against plane-wave near fields

← Verification · Spheres · Focused beam
Reference
near field against plane-wave near fields
Kind
method: an independent formulation inside this repo (a scattering matrix, a plane-wave superposition, a quadrature): proves the formulation
Calculated
E at points
Agreement
1e-8
A coated sphere (0.6/1.2 µm) under a focused beam (NA 0.6/0.2, y polarized, focus off-centre), λ = 3 µm: |E|² along a line against plane-wave near fields Along y = 0.2, z = 0.25 µm through the sphere (core radius 0.6, shell 1.2 µm): the beam's field from PyStratify's beam coefficients against 2016 plane waves from the pupil, each solved by the plane-wave near field and summed.
-2-101200.20.40.60.811.2x [µm]|E|²
|E|², PyStratify |E|², superposition of plane-wave near fields
Hover to read values.
  • largest relative difference: 2.94×10⁻¹⁵
  • PyStratify the lines, the reference the circles

Run it yourself: focused_checks.py · test_focused.py · figures.py · FOCUSED_CHECKS.md on GitHub, PyStratify 97e52a9