Normal incidence multilayer mirrors for extreme ultraviolet astronomySputtered multilayer coatings allow the use of normal incidence optics in the extreme ultraviolet (EUV) region below 500 A. Multilayer mirrors can be tailored to provide images at strong EUV lines in the sun and stars, in many cases making more efficient use of the telescope aperture than grazing incidence optics. Alternatively, the bandpass can be broadened at the expense of peak effective area, by varying the multilayer structure over the mirror surface. Such mirrors can also serve as optical elements in spectrographs for investigation of specific emission and absorption line complexes, and are self-filtering in that they reject nearby geocoronal and cosmic resonance line backgrounds. Current efforts at the Lockheed Palo Alto Research Laboratory in the design, fabrication, and testing of EUV multilayer mirrors are discussed. This program includes the design and fabrication of normal incidence EUV multilayer mirrors, and the deposition of multilayers on lacquer-coated substrates.
Document ID
19850043257
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stern, R. A. (Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Haisch, B. M. (Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Joki, E. G. (Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Catura, R. C. (Lockheed Research Laboratories Palo Alto, CA, United States)