35 -- Fringes from a tilted mirror¶

A Michelson interferometer on the command line, in a Branched .ufs file. One arm is tilted by 2 mrad, and carried profiles add point by point at the return, so straight fringes appear with no fringe model.

The overview figure of this example's run (python make_figures.py redraws it; the file is hero.png).

The plate is met twice: the return is a second element with "sameAs": "bs" and "side": 2, which reverses the sign of r (Beam splitters).

cd docs/examples/Diffraction/tilt-fringes
ultrafast validate michelson.ufs --graph
ultrafast run michelson.ufs run.json -o results
python report.py

fringe period 515.1 um   lambda / angle 515.0 um

Half the energy leaves towards the screen: the tilt gives many fringes across the beam, so the arms' interference averages out.