ULTRA-HIGH REJECTION OPTICAL FILTERS

Ultra-high rejection optical filters for operation at the ollowing three wavelengths, 589-nm, and 678-nm are to be nvestigated. These wavelengths are selected because they are the aser beacon wavelengths for existing adaptive optical filters hat offer a rejection of 10-6, with a high throughput, wide ield-of-view and the fast gating that are also required for the daptive optics application. We will design, build, and deliver 589-nm FADOF that has a field-of-view of 5-o, a peak throughput f 70%, and a background rejection of >10-5. We will identify oncepts for building ultra-high rejection, high throughput ptical filters at 510.6-nm and 678.2-nm. We will identify otential practical filter concepts for the Cu vapor laser lines, evelop a simple theory to predict the filter performance, and stimate the filter operating conditions. The results of this ortion of the effort will be the design parameters for a Cu apor laser line filter. In Phase II, the devices that have been onceptually designed in Phase I will be hardware designed, uilt, and tested.