Abstract
Laser-produced plasmas were recently imaged at a wavelength of 44 Å using a spherical multilayer-coated mirror operating near normal incidence, and emission features were recorded with a spatial resolution of 40 μm.1 In order to produce images with better resolution, we have developed a microscope consisting of two spherical mirrors in a Cassegrain-type optical configuration. Spherical optical figure was chosen because of the demonstrated low surface roughness and high optical figure accuracy of previously fabricated mirrors. The spherical aberrations of the concave primary mirror and the convex secondary mirror tend to cancel, and the radii of curvature of the two mirrors and the mirror separation were chosen to minimize the overall spherical aberration of the optical system.
© 1993 Optical Society of America
PDF ArticleMore Like This
A.B.C. Walker, T.W. Barbee, R.B. Hoover, and J. F. Lindblom
WB3 Space Optics for Astrophysics and Earth and Planetary Remote Sensing (SO) 1988
Robert L. Kauffman and Donald W. Phillion
ThC1 Soft X-Ray Projection Lithography (SXRAY) 1991
P. Dhez, G. Jamelot, A. Carillon, and P. Jaegle
MD5 Laser Techniques in the Extreme Ultraviolet (EUVS) 1984