SBIR Phase I: Two-Photon Resonant Holography

这个小企业创新研究（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量密度。共振全息和双光子吸收和光折变量子阱（PRQW）全息器件的创新应用将使高速系统的发展仅使用低成本的固态元件。第一阶段将发展TPRH技术，建立一个原型系统，并在选定的物种上演示其操作。双光子吸收与共振全息术的使用允许可见光或红外（IR）激光探测物种与紫外（UV）吸收线。可以避免昂贵的紫外激光器和光学器件。PRQW设备可实现高记录速率。这些设备能够达到千赫兹或兆赫兹的速率，能量需求在纳焦耳范围内。商业应用有望在工业和基础研究领域：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非线性行为的基础研究。此外，TPRH可能会应用于非常低成本的视频速率系统；轻型、低功耗机载或天基系统；以及用于层析成像测量的多视图系统。

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.