Optics
Rays, waves, polarization, and interferometry
ABCD ray transfer
Cascade lenses and spaces
Jones polarization
Polarizers and waveplates
Thin-lens imaging
Conjugates and magnification
Snell & Fresnel
Reflection/transmission coeffs
2-slit interference
Intensity fringe pattern
Single-slit diffraction
Sinc² envelope
Fabry–Pérot
Airy transmission peaks
Brewster angle
Polarizing angle vs n
Gaussian beam
w(z), R(z), Rayleigh range
Stokes parameters
S0–S3 from Ex, Ey, δ