Quality Assurance of Precision Optics: Interferometry 101

This video, from the National Center for Optics and Photonics Education, serves as a brief introduction to Interferometry, or the scenario in which "waves, usually electromagnetic, are superimposed in order to extract information about the waves," for investigative purposes. Discussed in this video are the parts that make up Interferometric machines, including: flat mirrors, interference patterns, beamsplitter cubes, flat mirrors, spatial filters, collimating lenses, and lasers.

The video runs 4:18 minutes in length.