Circularly polarized high order harmonics in the EUV photon energy range: toward table-top nanometric magnetic imaging

Boris Vodungbo; A. Barszczak Sardinha; Julien Gautier; Guillaume Lambert; Stéphane Sebban; Jan Lüning; Philippe Zeitoun

doi:10.1117/12.893603

5 October 2011 Circularly polarized high order harmonics in the EUV photon energy range: toward table-top nanometric magnetic imaging

Boris Vodungbo, A. Barszczak Sardinha, Julien Gautier, Guillaume Lambert, Stéphane Sebban, Jan Lüning, Philippe Zeitoun

Author Affiliations +

Proceedings Volume 8140, X-ray Lasers and Coherent X-ray Sources: Development and Applications IX; 81400D (2011) https://doi.org/10.1117/12.893603
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

Circularly polarized high order harmonics in the extreme ultraviolet range (18 - 27 nm) have been obtained by a two steps process. Harmonics were generated from a linearly polarized infrared laser (40 fs, 0.25 TW) focused into a neon filled gas cell. The harmonics have then been circularly polarized by a four-reflector phase-shifter. The polarization of the harmonics have been measured using a rotating multilayer broadband mirror set at an incidence angle of 45°. Fully circularly polarized radiation has been obtained with an efficiency of a few percents. This is significantly more efficient than currently demonstrated direct generation of elliptically polarized harmonics. This demonstration opens up new experimental capabilities based on high order harmonics, for example, in materials science for time-resolved nanometric magnetic imaging.

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Boris Vodungbo, A. Barszczak Sardinha, Julien Gautier, Guillaume Lambert, Stéphane Sebban, Jan Lüning, and Philippe Zeitoun "Circularly polarized high order harmonics in the EUV photon energy range: toward table-top nanometric magnetic imaging", Proc. SPIE 8140, X-ray Lasers and Coherent X-ray Sources: Development and Applications IX, 81400D (5 October 2011); https://doi.org/10.1117/12.893603

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KEYWORDS

Polarization

Polarizers

Extreme ultraviolet

Mirrors

Magnetism

CCD cameras

Reflectivity

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