Linnik interferometer

The basic configuration is the same as a Michelson interferometer.

The advantage of this design is its ability to compensate for chromatic dispersion and other optical aberrations.

In the image of a Linnik interferometer at right, 110 is the light source, 164 the detector.

The beamsplitter 120 produces the two arms of the interferometer.

The measurement arm 140 contains an objective lens 141 for imaging the surface to be studied 152.