Design and characterization of extreme-ultraviolet broadband mirrors for attosecond science |
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| Authors: | Morlens Anne-Sophie López-Martens Rodrigo Boyko Olga Zeitoun Philippe Balcou Philippe Varjú Katalin Gustafsson Erik Remetter Thomas L'huillier Anne Kazamias Sophie Gautier Julien Delmotte Franck Ravet Marie-Françoise |
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| Affiliation: | Laboratoire d'Optique Apliquée, Ecole Nationale Supérieure des Techniques--Ecole Polytechnique--CNRS UMR, Palaiseau, France. ann-sophie.morlens@ensta.fr |
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| Abstract: | A novel multilayer mirror was designed and fabricated based on a recently developed three-material technology aimed both at reaching reflectivities of about 20% and at controlling dispersion over a bandwidth covering photon energies between 35 and 50 eV. The spectral phase upon reflection was retrieved by measuring interferences in a two-color ionization process using high-order harmonics produced from a titanium: sapphire laser. We demonstrate the feasibility of designing and characterizing phase-controlled broadband optics in the extreme-ultraviolet domain, which should facilitate the manipulation of attosecond pulses for applications. |
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