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Journal Article

Toroidal grating astigmatism of high-harmonics characterized by EUV Hartmann sensor

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Ropers,  Claus       
Department of Ultrafast Dynamics, MPI for Biophysical Chemistry, Max Planck Society;

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oe-23-12-15310.pdf
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Citation

Mey, T., Zayko, S., Ropers, C., Schäfer, B., & Mann, K. (2015). Toroidal grating astigmatism of high-harmonics characterized by EUV Hartmann sensor. Optics Express, 23(12), 15310-15315. doi:10.1364/OE.23.015310.


Cite as: https://hdl.handle.net/21.11116/0000-000B-5D71-E
Abstract
The beam transport of single high-order harmonics in a monochromator arrangement is studied. A toroidal grating combines spectral filtering and focusing in order to produce a small individual spot for each harmonic. Here, the effect of small deviations from perfect alignment is investigated. Experimentally, a Hartmann sensor monitors the EUV wavefront while the grating is subjected to an online alignment procedure. The obtained results are confirmed by a simple theoretical description employing optical matrix methods.