TransferMatrix.jl

A general 4x4 transfer-matrix optics for layered media in Julia, with support for isotropic stacks and polarization-resolved results.

Highlights

• Isotropic multilayers with polarization-resolved reflection/transmission
• Angle and thickness sweeps for dispersion maps
• RefractiveIndex.jl integration plus custom dispersions
• Field profiles and interface positions for visualization
• Anisotropic layers and cross-polarization available but still experimental

Installation

julia>]
pkg> add TransferMatrix

using TransferMatrix

Quickstart

using TransferMatrix
using RefractiveIndex

λ = 0.6328  # μm
air = Layer(λ -> 1.0 + 0.0im, 0.0)
glass = Layer(RefractiveMaterial("main", "SiO2", "Malitson"), 0.5)

layers = [air, glass, air]
result = transfer(λ, layers; θ=0.0)
@show result.Rpp result.Tpp

Anisotropic layer + angle sweep

using TransferMatrix

no = λ -> 1.658
ne = λ -> 1.486
crystal = Layer(no, no, ne, 0.5; euler=(0, pi/4, 0))
air = Layer(λ -> 1.0 + 0.0im, 0.0)

λs = range(0.45, 0.75, length=200)
θs = range(0.0, 0.8, length=150)
result = sweep_angle(λs, θs, [air, crystal, air])
Rpp = result.Rpp

More examples

Check examples/ for full scripts: DBR cavities, Brewster angle, Fabry-Perot, polariton dispersion, and thickness sweeps.

Documentation

For tutorials, API reference, and validation tests, see https://garrek.org/TransferMatrix.jl.