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Design of a time-compensated EUV and soft X-ray monochromator with multilayer mirrors for high-order harmonics

Published online by Cambridge University Press:  30 July 2001

LUCA POLETTO
Affiliation:
INFM—Istituto Nazionale per la Fisica della Materia, Department of Electronics and Informatics, University of Padova, Padova, Italy
GIUSEPPE TONDELLO
Affiliation:
INFM—Istituto Nazionale per la Fisica della Materia, Department of Electronics and Informatics, University of Padova, Padova, Italy

Abstract

A time-compensated monochromator for ultrashort high-order harmonics in the EUV and soft X-ray regions is presented. The system consists of two grazing-incidence toroidal mirrors used, respectively, as collimating and refocusing elements and of two multilayer normal-incidence plane mirrors illuminated in parallel light that rotate along a vertical axis to select the operative wavelength, but remain parallel to guarantee the constant direction of the exit beam. This is performed by simultaneously rotating and translating one of the two mirrors along an axis parallel to the exit direction. The pulse time duration is not altered up to few femtoseconds.

Type
Research Article
Copyright
© 2001 Cambridge University Press

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