LASER INDUCED REORIENTATION OF NEMATIC LIQUID CRYSTALS.

L. Csillag, I. Jánossy, V. F. Kitaeva, N. Kroo, N. N. Sobolev, A. S. Zolotko

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A significant increase of the divergence and appearance of a fringe system has been observed by illuminating of MBBA (p-n-methoxybenzilidene-p-butylaniline) and OCB (octyl-cyano-biphenyl) nematic liquid crystalline samples with a collimated beam of an argon ion laser. The dependence of this effect on laser power, beam polarization, and angle of incidence has been studied in homeopolar and planar sandwich-like cells of 50-150 mu m thickness, in the nematic phase. At a homeopolar cell of MBBA (150 mu m thickness), at normal incidence a threshold laser power of 45 mW was found. The phenomena can be explained as deformation of the orientation by the Fredericks effect due to light fields. The observations are in good agreement with the theoretical predictions including an estimation of the laser power threshold.

Original languageEnglish
Pages (from-to)173-181
Number of pages9
JournalMolecular Crystals and Liquid Crystals
Volume78
Issue number1-4
Publication statusPublished - Dec 1981

Fingerprint

Nematic liquid crystals
retraining
liquid crystals
Lasers
lasers
incidence
thresholds
Argon
cells
illuminating
divergence
argon
Ions
Polarization
Crystalline materials
Liquids
polarization
liquids
predictions
ions

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Csillag, L., Jánossy, I., Kitaeva, V. F., Kroo, N., Sobolev, N. N., & Zolotko, A. S. (1981). LASER INDUCED REORIENTATION OF NEMATIC LIQUID CRYSTALS. Molecular Crystals and Liquid Crystals, 78(1-4), 173-181.

LASER INDUCED REORIENTATION OF NEMATIC LIQUID CRYSTALS. / Csillag, L.; Jánossy, I.; Kitaeva, V. F.; Kroo, N.; Sobolev, N. N.; Zolotko, A. S.

In: Molecular Crystals and Liquid Crystals, Vol. 78, No. 1-4, 12.1981, p. 173-181.

Research output: Contribution to journalArticle

Csillag, L, Jánossy, I, Kitaeva, VF, Kroo, N, Sobolev, NN & Zolotko, AS 1981, 'LASER INDUCED REORIENTATION OF NEMATIC LIQUID CRYSTALS.', Molecular Crystals and Liquid Crystals, vol. 78, no. 1-4, pp. 173-181.
Csillag L, Jánossy I, Kitaeva VF, Kroo N, Sobolev NN, Zolotko AS. LASER INDUCED REORIENTATION OF NEMATIC LIQUID CRYSTALS. Molecular Crystals and Liquid Crystals. 1981 Dec;78(1-4):173-181.
Csillag, L. ; Jánossy, I. ; Kitaeva, V. F. ; Kroo, N. ; Sobolev, N. N. ; Zolotko, A. S. / LASER INDUCED REORIENTATION OF NEMATIC LIQUID CRYSTALS. In: Molecular Crystals and Liquid Crystals. 1981 ; Vol. 78, No. 1-4. pp. 173-181.
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