SBIR Phase I: Two-Photon Resonant Holography

这个小型企业创新研究(SBIR)第一阶段项目将开发一种双光子共振全息(TPRH)成像技术，能够记录原子或分子物种的时间分辨数密度。共振全息术和双光子吸收和光折变量子井(PRQW)全息器件的创新应用将使仅使用低成本固态组件的高速系统的开发成为可能。第一阶段将开发TPRH技术，建立一个原型系统，并用选定的物种演示其操作。双光子吸收与共振全息术的使用使可见光或红外(IR)激光能够探测具有紫外线(UV)吸收线的物种。可以避免昂贵的紫外线激光和光学设备。PRQW设备能够实现高记录速率。这些器件的能量需求在纳焦耳范围内，能够达到千赫兹或兆赫的速率。商业应用领域包括：燃烧、等离子体、反应流、体外生物医学测试、超音速混合和反应流，以及原子或分子电子系统的非线性行为的基础研究。此外，TPRH可能应用于极低成本的视频速率系统；轻型、低功率机载或天基系统；以及用于断层成像测量的多视角系统。

This Small Business Innovation Research (SBIR) Phase I project will develop a Two-Photon Resonant Holography (TPRH) imaging technique capable of recording time-resolved number densities of atomic or molecular species. Resonant holography and the innovative application of two-photon absorption and photorefractive quantum well (PRQW) holographic devices will allow the development of high-speed systems using only low-cost, solid-state components. Phase I will develop the TPRH technique by constructing a prototype system and demonstrating its operation with a selected species. The use of two-photon absorption with resonant holography allows visible or infrared (IR) lasers to probe species with ultraviolet (UV) absorption lines. Costly UV lasers and optics can be avoided. The PRQW device enables high recording rates. These devices are capable of kiloHertz or megaHertz rates with energy requirements in the nanojoule range.Commercial applications are expected in industrial and fundamental research areas: combustion, plasmas, reacting flows, in vitro biomedical testing, supersonic mixing and reacting flows, and basic research into the nonlinear behavior of atomic or molecular electronic systems. Furthermore, TPRH may find applications in very low cost video rate systems; lightweight, low-power airborne or space-based systems; and multiple-view systems for tomographic measurements.