title: [Study on photoelectric dispersion characteristic of liquid crystal light valve].
abstract: The electro-optical properties and dispersion characteristics of a liquid crystal light valve (LCLV) were investigated. A 90 degrees twisted light valve (model TB3639) was used as a typical LCLV in the authors' experiment. At 27 degrees C and a fixed frequency of 1000 Hz, the transmitted light intensities (T) of the LCLV were measured as a function of wavelength (lamda) at different applied voltages. From the measured T-lamda curves, the dependence of contrast ratio k on the wavelength can be derived. The authors' results showd that the TB3639 LCLV has a comparatively high contrast ratio and low dispersion within the visible region. In the range of 450-750 nm, the contrast ratio, with its value higher than 0.8, does not change much with the wavelength. Particularly the contrast ratio is higher than 0.95 with a minimum dispersion in the range of 550-670 nm.
authors.affiliation: Department of Physics, Shantou University, Shantou 515063, China.
authors.forename: Chong
authors.initials: C
authors.lastname: Huang
authors.forename: Xue-ping
authors.initials: XP
authors.lastname: Zhou
authors.forename: Yan-dong
authors.initials: YD
authors.lastname: Ouyang
authors.forename: Xu-sheng
authors.initials: XS
authors.lastname: Lin
authors.forename: Yong-jun
authors.initials: YJ
authors.lastname: Wu
authors.forename: Yuan-ming
authors.initials: YM
authors.lastname: Huang