Phase-measuring interferometers were developed as laboratory research instruments and several such products are available commercially. However, the transition from laboratory to optical shop applications has been slow. This paper discusses the advantages of phase-measuring interferometry, the design features that an interferometer needs in order to operate in an optical shop environment, and the performance features of the data acquisition and analysis software package.
H. Philip Stahl,
"Phase-Measuring Interferometers For The Optics Shop", Proc. SPIE 0802, In-Process Optical Metrology for Precision Machining, (1 January 1987); doi: 10.1117/12.967122; https://doi.org/10.1117/12.967122