3 September 2008 Design of a beam separator for high-order harmonics below 10 nm
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Abstract
High-order harmonics are a relevant source of coherent extreme-ultraviolet and soft x-ray radiation of very short time duration, super spatial coherence and high peak brilliance. For their practical use however, the problem of the co-propagation of the high-energy pumping beam with the generated harmonics has to be solved. For this purpose a beam separator has to be used, with high damage threshold, high attenuation of the pump pulse, high throughput in the extreme-ultraviolet and tunability in a broad spectral region. In this work we present the design of a beam separator for ultrashort high-order harmonics with two diffraction gratings. The system can be designed for any wavelength in the 2-40 nm region, is efficient and robust with respect also to very powerful laser sources. Both temporal and spatial chirping effects are analyzed.
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L. Poletto, L. Poletto, F. Frassetto, F. Frassetto, P. Villoresi, P. Villoresi, } "Design of a beam separator for high-order harmonics below 10 nm", Proc. SPIE 7077, Advances in X-Ray/EUV Optics and Components III, 707711 (3 September 2008); doi: 10.1117/12.793002; https://doi.org/10.1117/12.793002
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