A single-element phase-shifting interferometer has been developed based on the lateral shearing interferometer. This new interferometer requires no precise alignment, and the phase is continuously varied by changes in the voltage across a commercially available liquid-crystal phase retarder.
© 2001 Optical Society of America
(120.3180) Instrumentation, measurement, and metrology : Interferometry
DeVon W. Griffin, "Phase-shifting shearing interferometer," Opt. Lett. 26, 140-141 (2001)