Figured grazing incidence mirrors from reheated float glass

Abstract

High throughput grazing incidence mirrors have been fabricated from float glass using a new inexpensive technique. An array of twelve such mirrors including grazing angles from 3 to 15° has been fabricated and tested. Optical measurement of this array shows a line spread function of 6.3-min of arc FWHM with 90% energy enclosed within 13 min of arc. Three-mirror arrays are used to provide 1-D focusing for a diffuse extreme ultraviolet spectrometer. This paper presents the fabrication techniques and testing procedures used, as well as the mirror performance results.

© 1988 Optical Society of America

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