Hybrid multinary modulation using a phase modulating spatial light modulator and a low-pass spatial filter

Zoltán Göröcs, Gábor Erdei, Tamás Sarkadi, Ferenc Ujhelyi, Judit Reményi, Pal Koppa, Emoke Lorincz

Research output: Contribution to journalArticle

19 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2336-2338
Number of pages3
JournalOptics Letters
Issue number16
Publication statusPublished - Aug 15 2007


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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