Determination of optical constants for cholesteric liquid crystal films by using transmittance and reflectance spectra

투과 및 반사 스펙트럼을 이용한 콜레스테릭 액정 필름의 광학 상수 결정

  • 박종락 (조선대학교 광기술공학과) ;
  • 류기한 (LG 전선주식회사 광통신연구소)
  • Published : 2004.02.01


We have obtained optical constants for cholesteric liquid crystal (CLC) films by fitting theoretical spectra of transmittance and reflectance with measured ones. Berreman's 4${\times}$4 matrix approach was used for the calculation of theoretical spectra. The fitting method was applied to three samples with different reflection bands and fitted results of refractive indices for CLC samples were compared with measured ones for a parallel-aligned LC sample. It was found that the two results were in fairly good agreement within the error of the fitted results for the three CLC samples.


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