Optical Power Limiting Liquid Crystal Composites
Final rept. Jun 1988-Jun 1993
KENT STATE UNIV OH LIQUID CRYSTAL INST
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This final report covers the experimental and theoretical investigations of optical power limiting in liquid crystal systems. Both pure and composite systems were investigated. Evaluation of a variety of liquid crystal materials for optical power limiting applications is reported. Under this project, optical power limiting of several pure materials was demonstrated in the nanosecond regime, with the cyanobiphenyls being found most effective for passive OPL applications. For CW lasers, polymer dispersed liquid crystals in a polymer matrix were shown to be effective optical power limiters when used in an active configuration. Extensive research on the mechanisms causing optical nonlinear response in liquid crystals is reported. Additional work on a separate subproject to evaluate and develop the shuttering capability of polymer dispersed liquid crystals in the IR is reported. Work on a variety of polymerliquid crystal materials is reported. Successful shuttering of IR radiation was shown.
- Organic Chemistry
- Laminates and Composite Materials