We have demonstrated several inexpensive methods that can be used to measure the deflection angles of prisms with microradian precision. The methods are self-referenced, where various reversals are used to achieve absolute measurements without the need of a reference prism or any expensive precision components other than the prisms under test. These techniques are based on laser interferometry and have been used in our laboratory to characterize parallel-plate beam splitters, penta prisms, right-angle prisms, and corner cube reflectors using only components typically available in an optics laboratory.
© 2005 Optical Society of America
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(230.1360) Optical devices : Beam splitters
(230.5480) Optical devices : Prisms
Rebecca Olson, Justin Paul, Scott Bergeson, and Dallin S. Durfee, "Self-referenced prism deflection measurement schemes with microradian precision," Appl. Opt. 44, 4639-4647 (2005)