Progress in the Development of EUV Imaging Systems

Autor: D. A. Tichenor, A. K. Ray-Chaudhuri, G. D. Kubiak, K. B. Nguyen, S. J. Haney, K. W. Berger, R. P. Nissen, Y. E. Perras, P. S. Jin, L. I. Weingarten, P. N. Keifer, R. H. Stulen, R. N. Shagam, W. C. Sweatt, T. G. Smith, O. R. Wood, A. A. MacDowell, J. E. Bjorkholm, T. E. Jewell, F. Zernike, B. L. Fix, H. W. Hauschildt
Rok vydání: 1996
Zdroj: Extreme Ultraviolet Lithography (TOPS).
DOI: 10.1364/eul.1996.eww2
Popis: An extreme ultraviolet (EUV) ring-field camera, comprised of 3 aspheric mirrors, has been fabricated and evaluated using visible light. The wavefront error (WFE) within a 1 mm × 25 mm field of view is 2.5 nm RMS. In a 10x Schwarzschild optic, having a 0.4 mm diameter field of view, an optically measured WFE of 1 nm RMS has been achieved. EUV images recorded in resist using the Schwarzschild camera are shown. The integration of this camera into a laboratory tool for device fabrication experiments is described.
Databáze: OpenAIRE