Photorefractive Bragg gratings in nematic liquid crystals aligned by a magnetic field

Gary P. Wiederrecht, Michael R. Wasielewski

Research output: Contribution to journalArticle

11 Citations (Scopus)


Photorefractive Bragg gratings with Q≤1 are investigated using magnetic field alignment techniques in low-molar-mass nematic liquid crystals doped with electron donor and acceptor molecules. The alignment involves a 0.3 T magnetic field which produces thicker homeotropic samples than traditional surfactant techniques. Low applied voltage and low optical intensity requirements of nematic liquid crystals are maintained while achieving photorefractive grating Bragg diffraction characteristics.

Original languageEnglish
Pages (from-to)3459-3461
Number of pages3
JournalApplied Physics Letters
Issue number23
Publication statusPublished - Jun 7 1999


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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