High-Frequency Shearing Interferometer Emission Velocemeter (SIEVE) for High-Temperature Gas Diagnostics

这个小型企业创新研究第一阶段项目将开发一种功能强大的高温气体光学诊断技术，这种技术与目前使用的任何技术都有根本的不同。这种诊断提供了空间定位的信息，如激光诱导荧光，但不需要激光。它利用热发光气体的光发射。如在该提议中所解释的，所发射的光可以被光学地检测并且随后被操纵并且被分离成两个分量，这两个分量的强度差仅是由于来自发光体积内的空间局部化区域的光发射。更确切地说，该强度差是由于所选择的局部区域中的光源分布的一个空间傅立叶分量。由于先前的大学和SBIR的低频设备的发展，高频剪切干涉仪发射速度计（SIEVE）可以设计，制造，并在SBIR的资助下演示。在第一阶段，将分析将该技术扩展到高频的三种不同方法，将开发仪器的概念设计，并计算每种方法的光强要求。在第二阶段，将构建、演示和表征一个完整的仪器。

This Small Business Innovation Research Phase I Project will develop a powerful optical diagnostic for high temperature gases that is fundamentally different from any technique currently in use. This diagnostic provides spatially localized information, like laser-induced fluorescence, but does not require a laser. It utilizes the optical emission from the hot luminous gases. As explained in this proposal, the emitted light can be optically detected and subsequently manipulated and separated into two components whose intensity difference is due only to optical emission from a spatially localized region within the luminous volume. More precisely, this intensity difference is due to one spatial Fourier component of the light source distribution in the selected, localized region. Because of prior university and SBIR development of low-frequency devices, a high-frequency shearing interferometer emission velocimeter (SIEVE) can be designed, fabricated, and demonstrated under SBIR funding. In Phase I, three different ways to extend the technique to high frequencies will be analyzed, conceptual designs for instruments will be developed, and the light intensity requirements for each method will be calculated. A complete instrument will be built, demonstrated, and characterized during Phase II.