18 August 1995 Angular multiplexing for lateral shear interferometry using photorefractive BaTiO3
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Proceedings Volume 2622, Optical Engineering Midwest '95; (1995) https://doi.org/10.1117/12.216848
Event: Optical Engineering Midwest '95, 1995, Chicago, IL, United States
Abstract
A shear interferometer using wave mixing and angular multiplexing techniques in a BaTiO3 crystal is investigated. By varying the angle between the pump beam and the probe beam, two separate holograms in the form of two index gratings are formed in the crystal. Each grating has a different magnitude and direction in the k-space. Reconstruction is attempted with both the same wavelength as that of the writing beams and with a slightly different wavelength. During the reconstruction process the crystal orientation is adjusted such that the phase-matching condition is satisfied simultaneously for both gratings. As a result of the reconstruction two sheared wavefronts are obtained. A theoretical description, results of theoretical investigations and an experimental configuration of this interferometer are presented.
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Valentina A. French, Azad Siahmakoun, Juergen Spielvogel, "Angular multiplexing for lateral shear interferometry using photorefractive BaTiO3", Proc. SPIE 2622, Optical Engineering Midwest '95, (18 August 1995); doi: 10.1117/12.216848; https://doi.org/10.1117/12.216848
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