The optical properties and the theoretical prediction of color optical shutter with dye-doped polymer network liquid crystal (PNLC) were investigated. The view-angle dependence of reflectance according to the bias conditions showed distinctive characteristics, which could be explained from the effects of dye absorption and path length. It was also shown that the thickness dependence of reflectance was strongly influenced by the light-scattering coefficient. Our experimental results matched up well with the theoretical prediction based on the light scattering of liquid crystals in polymer network and the absorption of dichroic dye. This work indicates potential to improve the optical device using dye-doped liquid crystal-polymer composite.
© 2011 Optical Society of America
Original Manuscript: December 6, 2010
Revised Manuscript: January 20, 2011
Manuscript Accepted: January 25, 2011
Published: February 28, 2011
G. H. Lee, K. Y. Hwang, J. E. Jang, Y. W. Jin, S. Y. Lee, and J. E. Jung, "Characteristics of color optical shutter with dye-doped polymer network liquid crystal," Opt. Lett. 36, 754-756 (2011)