Point Diffraction Interferometer

We have proposed a point diffraction interferometer in which the phase stepping can be implemented by the use of liquid crystals. With this set-up we are able to register a holographic movie in which we can, for each time, focus at different planes; visualize what happens at a given plane as a function of time; or follow some object in depth and time. We are developing systems for particle tracking with application in the determination of speed field in a fluid.

Point Diffraction Interferometer with Liquid Crystals

  1. C. IemmiRamírez, C., and Campos, J.“Digital holographic movie by using a point diffraction interferometer”, Optical Engineering, vol. 54, p. 044104, 2015.
  2. C. RamírezOtón, E.Iemmi, C.Moreno, I.Bennis, N.Otón, J. M., and Campos, J.“Point diffraction interferometer with a liquid crystal monopixel”, Optics Express, vol. 21, pp. 8116-8125, 2013.
  3. C. IemmiMoreno, A., and Campos, J.“Digital holography with a point diffraction interferometer”, Opt. Express, vol. 13, pp. 1885–1891, 2005.
  4. C. IemmiMoreno, A.Nicolás, J., and Campos, J.“Correction of aberrations in an optical correlator by using it as a point diffraction interferometer”, Proc. SPIE, vol. 5457, pp. 589-597, 2004.
Campus d'excel·lència internacional U A B