Determination of birefringence dispersion in nematic liquid crystals by using an S-transform

Ozder S. , COŞKUN E. , Koysal O., Kocahan O.

OPTICS LETTERS, cilt.32, sa.14, ss.2001-2003, 2007 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32 Konu: 14
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1364/ol.32.002001
  • Sayfa Sayıları: ss.2001-2003


An analysis of the transmittance signal of the 5CB-coded nematic liquid crystal by using an S-transform is presented. The transmittance spectrum of this liquid crystal is acquired in the 1.26-2.22 mu m(-1) region at room temperature. The dispersion curve of birefringence is obtained for 5CB by this analysis, and data are fitted to the Cauchy formula, whereby the dispersion parameters are extracted. The result is found to be in favorable accordance with the Merck catalog value. (c) 2007 Optical Society of America.