In a previous paper (1991) the authors described how Edser-Butler fringes could be used to assess the spatial optical structure of liquid-crystal cells and to determine dispersion characteristics and thickness. They explain how the same fringes may be used to easily assess how the extraordinary index changes with applied voltage and how this is affected by wavelength. The method is extremely quick, using only simple laboratory equipment. Results are given for liquid-crystal BDH-E44.
No takes yet. Share an insight, caveat, or question.
Love et al. (1992) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: