title: Slope measurement of a phase object using a polarizing phase-shifting high-frequency Ronchi grating interferometer.
abstract: An interferometric method to measure the slope of phase objects is presented. The analysis was performed by implementing a polarizing phase-shifting cyclic shear interferometer coupled to a 4-f Fourier imaging system with crossed high-frequency Ronchi gratings. This system can obtain nine interference patterns with adjustable phase shifts and variable lateral shear. In order to extract the slope of a phase object, it is only analyzed using four patterns obtained in a single shot, and applying the classical method of phase extraction.
authors.affiliation: Centro de Investigaciones en Óptica A.C., Loma del Bosque #115, Col. Lomas del Campestre, C.P. 37150, A.P. 1-948, León, Gto. México. ivantotoarellano@cio.mx
authors.forename: Noel-Ivan
authors.initials: NI
authors.lastname: Toto-Arellano
authors.forename: Amalia
authors.initials: A
authors.lastname: Martínez-García
authors.forename: Gustavo
authors.initials: G
authors.lastname: Rodríguez-Zurita
authors.forename: Juan Antonio
authors.initials: JA
authors.lastname: Rayas-Álvarez
authors.forename: Areli
authors.initials: A
authors.lastname: Montes-Perez