Complex modulation characterization of liquid crystal spatial light modulators by digital holographic microscopy

Chau-Jern Cheng, Yu Chih Lin, Mei Li Hsieh, Han Yen Tu

Research output: Contribution to journalArticle

10 Citations (Scopus)


We propose and demonstrate the characterization of complex modulation of liquid crystal devices by phase-shifting digital holographic microscopy with lensless imaging configuration. The complex-modulated wavefronts of the liquid crystal spatial light modulator are measured directly from the reconstructed field of the phase-shifted digital holograms. The characteristics of various operation modes of the commercial twisted nematic liquid crystal devices are specified as functions of input gray levels.

Original languageEnglish
Pages (from-to)3527-3529
Number of pages3
JournalJapanese Journal of Applied Physics
Issue number5 PART 1
Publication statusPublished - 2008 May 16



  • Complex modulation
  • Digital holography
  • Liquid crystal spatial light modulator

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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