Upconverting Films

Recent advances in the single wavelength excitation to induce upconversion emission in transparent colloids of Lanthanide-doped NaYF4 nanocrystals provide the opportunity for significant performance in biological tagging applications. For many military missions, a cost-effective, ultra-compact, passively infrared detection is also required to take advantage of the weak fluorescence. Upconversion has been shown to be an efficient way to generate visible radiation because high pumping density is not required. Boston Applied Technologies, Inc. (BATi) proposes a multi-wavelength up conversion responsible material made by rare earth-ions co-doped SiO2 glass film that can fulfill the requirement of this solicitation and also provide a method to explore how to improve photon collection and conversion efficiencies, dynamic range, sensitivity, image formation, and resolution, and would enhance efforts in developing tactical optical systems.