Modified phase contrast for recording of holographic optical elements.
A modified phase contrast method is described for the fabrication of holographic optical elements with in-line diffraction patterns. In this method, a liquid crystal phase modulator is addressed by computer-generated holograms to achieve variable phase gratings. The phase gratings are imaged onto photosensitive material by a phase contrast method without a Fourier filter. We show the analytical treatment of the modified phase contrast method and demonstrate the application in holographic recording.
Teschke
Marcel
M
Department of Optical Engineering, Technische Universität Ilmenau, Ilmenau, Germany. marcel.teschke@tu-ilmenau.de
Sinzinger
Stefan
S