Spectrally controlled interferometry (SCI)
Coherent and incoherent interferometry is well suited for the measurement of optics. The spectrally controlled interferometry approach developed by Äpre uses a spectrally controlled light source that combines the advantages of both techniques in a user-friendly method.
Optical components do not have to be moved in this process.
We described the exact procedure in issue 5/21 of LP.PRO: Spectral Controlled Interferometry: High precision optical measurement of planar optics