2014-04-041999-04-29Myrian C. Tebaldi ; Luciano Angel and Nestor A. Bolognini "Photorefractive optical processing: some proposals", Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, 173 (April 29, 1999); doi:10.1117/12.346778; http://dx.doi.org/10.1117/12.346778http://hdl.handle.net/10784/1450Some proposals on Lau and Talbot fringes formation based on a grating registered as birefringence modulation in a photorefractive crystal, will be presented. In the Talbot case, the stored grating can be replicated if read-out with coherent light. The system for the Lau arrangement behaves as a combination of an amplitude and a birefringence phase grating. In both cases, it is possible to control the visibility and to produce a contrast reversion of fringes by using an analyzer. Besides, Lau and Talbot interferometers based on the mentioned approach and their alternative experimental arrangements will be discussed. © (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.enginfo:eu-repo/semantics/conferencePaperinfo:eu-repo/semantics/closedAccessBirefringenceCrystalsInterferometersModulationOptical signal processingAcceso cerrado2014-04-04Ángel-Toro, LucianoBolgnini, NéstorTebaldi, Myrian10.1117/12.346778