To increase the accuracy of wave-front evaluation, we propose to exploit the natural capability of multiple lateral shearing interferometers to measure simultaneously more than two orthogonal phase derivatives. We also describe a method, based on Fourier-transform analysis, that uses this multiple information to reconstruct the wave-front under study.
© 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
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(140.3300) Lasers and laser optics : Laser beam shaping
Sabrina Velghe, Jérôme Primot, Nicolas Guérineau, Mathieu Cohen, and Benoit Wattellier, "Wave-front reconstruction from multidirectional phase derivatives generated by multilateral shearing interferometers," Opt. Lett. 30, 245-247 (2005)