Accession Number:

ADP011617

Title:

Optical Dichroism of Homeotropically Oriented Films of Comb-Shaped Liquid Crystal Polymer

Descriptive Note:

Corporate Author:

MOSCOW STATE UNIV (RUSSIA) DEPT OF PHYSICS

Report Date:

2000-09-29

Pagination or Media Count:

4.0

Abstract:

In this work the polarization absorption spectrum of homeotropically oriented comb-shaped liquid crystal polymer LCP film interposed in the electrooptical cell was investigated. The optical parameters of electrodes and polymer were estimated from the observed absorption spectra of the cell with and without polymer film using the method of interferometric extrema envelopes. This method enabled us to re-establish the true polarization absorption spectrum of the polymer. For this purpose the refractive index dispersion data of the substrates and the polymer obtained by independent investigations were used. From the dichroic ratio for the absorption band at lambda 405 nm the order parameter S was estimated taking into account the effects of local fields.

Subject Categories:

  • Crystallography
  • Atomic and Molecular Physics and Spectroscopy
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE