Nonlinear Polarization Shaping in a Nematic Liquid Crystal

  • Gary Galstian
  • Tigran Galstyan


High efficiency nonlinear polarization conversion in nematic liquid crystal is demonstrated in reflection geometry. The polarization shaping is realized via coupling of four orthogonal polarized beams on orientational transmission phase gratings. The vectorial character of excitations allows a collinear phase matched interaction with a best overlapping of signal and pump beams, thus enhancing the coupling efficiency. The schema allows the continuous control of polarization conversion by the light exposition.


Pump Beam Polarization Rotation Signal Beam Orthogonal Polarization Phase Match Condition 
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    T. Galstyan, B.Ya. Zel’dovich, E.A. Nemkova, A.V. Sukhov, Nonstationary Optical Excitation of Bulk Short-period Orientation Lattices in a Nematic, Sov. Phys. JETP 66, (5): 991 (1987).Google Scholar
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    2.T. Galstyan and A.V. Sukhov, Dynamics of Transient Self-Phase Conjugation in a Liquid Crystal, (USSR) Zh.Technic.Fiz. 60, 12: 81 (1990).Google Scholar
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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Gary Galstian
    • 1
    • 2
  • Tigran Galstyan
    • 1
  1. 1.Centre d’Optique, Photonique et LaserUniversité LavalQuébecCanada
  2. 2.Center for Astrophysics, Astrophysical Observatory, Smithsonian InstitutionHarvard UniversityUSA

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