Hybrid multinary modulation using a phase modulating spatial light modulator and a low-pass spatial filter.
We propose a method for performing binary intensity and continuous phase modulation of beams with a spatial light modulator (SLM) and a low-pass spatial filtering 4-f system. With our method it is possible to avoid the use of phase masks in holographic data storage systems or to enhance the phase encoding of the SLM by making it capable of binary amplitude modulation. The data storage capabilities and the limitations of the method are studied.
Göröcs
Zoltán
Z
Department of Atomic Physics, Budapest University of Technology and Economics, H-1111 Budapest, Budafoki út 8,Hungary.
Erdei
Gábor
G
Sarkadi
Tamás
T
Ujhelyi
Ferenc
F
Reményi
Judit
J
Koppa
Pál
P
Lorincz
Emoke
E