SBIR PHASE II: Holographic Grating Filters for Ca II Line Imaging and Emission Spectroscopy

这个小型企业创新研究第二阶段项目将展示和测试一个紧凑，低成本和超窄带宽（0.3A）的原型全息光栅滤波器系统，用于在紫外线钙钾线（3933 A）上进行太阳观测。 在第一阶段期间开发的这项技术解决了在UV波长中窄带宽滤波器的关键要求，因为难以制造具有足够光谱分辨率和光学质量的Lyot和类似干涉滤波器。 在第二阶段，将优化适当的记录材料，并使用在第一阶段开发的全息技术记录体光栅。 原型过滤系统将在大熊太阳观测站或其他合适的测试地点进行测试。 该第二阶段计划将使亚埃通带滤波器能够用于现场测试，并为这项新技术的商业化提供进一步的技术改进。 这项新技术的潜在商业应用包括：光学遥感的光学接收器;污染物、化学品、金属和矿物探测;自由空间光通信的日盲滤光器;高密度光盘和全息数据存储;紫外光投影光刻。

This Small Business Innovation Research Phase II project will demonstrate and test a compact, low cost and ultra-narrow bandwidth ( 0.3A) prototype holographic grating filter system for solar observing at the UV Ca K line (3933A). This technique developed during Phase I addresses a key requirement for narrow bandwidth filters in the UV wavelength because of the difficulties in fabricating Lyot and similar interference filters with sufficient spectral resolution and optical quality. During Phase II, suitable recording materials will be optimized and used to record volume gratings using holography techniques developed during Phase I. The prototype filter system will be tested at Big Bear Solar Observatory or other suitable test sites. This Phase II program will enable sub-Angstrom passband filters to be constructed for field testing and provide further technical improvement for commercialization of this new technology. Potential commercial applications of this new technology include optic receivers for optical remote sensing; pollutant, chemical, metal and mineral detection; solar-blind filters for free-space optical communications; high density optical disks and holographic data storage; and UV optical projection lithography.