Parabolic lenses have been formed by photoanodic etching of silicon in the form of profiles 22 mu m deep and 5 mu m in diameter. Observations with 17.46 keV radiation show that the focal length of the lenses is 7 cm and images with resolution of 3 mu m have been obtained. A procedure to evaluate the quality of real refracting profiles is suggested. (C) 1999 Elsevier Science B.V. All rights reserved.
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Univ Calif Santa Barbara, Mat Res Lab, Dept Mat, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Mat Res Lab, Dept Mat, Santa Barbara, CA 93106 USA
Li, YL
Yasa, M
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机构:Univ Calif Santa Barbara, Mat Res Lab, Dept Mat, Santa Barbara, CA 93106 USA
Yasa, M
Pelletier, O
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机构:Univ Calif Santa Barbara, Mat Res Lab, Dept Mat, Santa Barbara, CA 93106 USA
Pelletier, O
Safinya, CR
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机构:Univ Calif Santa Barbara, Mat Res Lab, Dept Mat, Santa Barbara, CA 93106 USA
Safinya, CR
Caine, E
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机构:Univ Calif Santa Barbara, Mat Res Lab, Dept Mat, Santa Barbara, CA 93106 USA
Caine, E
Hu, EE
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机构:Univ Calif Santa Barbara, Mat Res Lab, Dept Mat, Santa Barbara, CA 93106 USA
Hu, EE
Fernandez, P
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机构:Univ Calif Santa Barbara, Mat Res Lab, Dept Mat, Santa Barbara, CA 93106 USA