Wavelength dependence of twisted nematic liquid crystal phase modulators

Thu Lan Kelly, Jesper Munch

Research output: Contribution to journalArticle

14 Citations (Scopus)


Many twisted nematic liquid crystal spatial light modulators suffer from limited phase modulation capability and coupled amplitude modulation. In particular, a phase modulation capability of less than 2 π radians is a severe limitation. Phase modulation is wavelength dependent. We examine the effect of changing the operating wavelength on the phase and amplitude modulation characteristics of a commercial liquid crystal spatial light modulator. Comparisons are made with a double pass configuration which can also increase the phase modulation capability.

Original languageEnglish
Pages (from-to)252-258
Number of pages7
JournalOptics Communications
Issue number4-6
Publication statusPublished - 15 Nov 1998


  • Liquid crystal devices
  • Phase modulators

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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