Highly Nonlinear Optical Nano-Networks

The objective of this Phase I proposal is to synthesize and characterize supra-nonlinear optical materials in conjunction with nanoparticle networks containing dispersions of highly non-linear optical (NLO) materials. Nematic liquid crystals (LC) dopedwith methyl red, a photoconducting dye, have shown some of the highest NLO responses recorded to date. Nano-dispersing this dye-doped LC should result in faster NLO responses. Furthermore, nano-dispersed NLO materials can be activated with lower powersources than their bulk counterparts. Fast, low power NLO materials are necessary to develop the next generation of spatial light modulators that are needed for the high mobility applications envisioned by the DoD. Foster-Miller proposes to meet thisobjective by developing an innovative, low cost, chemically-based method for nano-encapsulating NLO moieties in a reconfigurable matrix. In Phase I, Foster Miller will select the matrix material, produce films using NLO chromophores dispersed at thenanoscale, characterize the material, and test the composite material system for NLO properties and switching speed. Details on the approach and work plan are contained within this proposal. (P-00876)Fast-responding, low-power non-linear optical materialsshow special promise as optical sensors, and image processing devices. Important applications include protection of sensors and eyes against low energy lasers, advanced (IFF)/Combat ID sensors, image-scene processing for battlefield situational awareness,and countermeasure and protective devices. Other applications include optical computing and image processing.