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

这个小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，与目前使用的任何技术都有根本不同。这种诊断提供空间定位信息，如激光诱导荧光，但不需要激光。它利用热发光气体的光学发射。正如本提案中所解释的那样，发射的光可以被光学检测并随后被操纵并分离成两个分量，其强度差异仅是由于发光体积内空间局部区域的光发射。更准确地说，这种强度差异是由于光源分布的一个空间傅里叶分量在选定的局部区域。由于先前的大学和SBIR对低频器件的开发，在SBIR的资助下，可以设计，制造和演示高频剪切干涉仪发射测速仪（筛）。在第一阶段，将分析将该技术扩展到高频的三种不同方法，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，将建造、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.