%0 Journal Article %T Spatial-domain interferometer for measuring plasma mirror expansion %+ Laboratoire d'optique appliquée (LOA) %A Bocoum, M %A Böhle, F %A Vernier, A. %A Jullien, Aurélie %A Faure, J. %A Lopez-Martens, R. %Z ANR APERO %< avec comité de lecture %@ 0146-9592 %J Optics Letters %I Optical Society of America - OSA Publishing %8 2015-06-18 %D 2015 %R 10.1364/OL.40.003009 %K Phase measurement %K (110.3175) Interferometric imaging %K (070.7145) Ultrafast processing %K (320.7100) Ultrafast measurements. %Z Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]Journal articles %X We present a practical spatial-domain interferometer for characterizing the electronic density gradient of laser- induced plasma mirrors with sub-30-femtosecond temporal resolution. Time-resolved spatial imaging of an intensity- shaped pulse reflecting off an expanding plasma mirror in- duced by a time-delayed pre-pulse allows us to measure characteristic plasma gradients of 10–100 nm with an ex- pansion velocity of 10.8 nm/ps. Spatial-domain interferom- etry (SDI) can be generalized to the ultrafast imaging of nm to μm size laser-induced phenomena at surfaces. %G English %2 https://hal-ensta-paris.archives-ouvertes.fr/hal-01229263/document %2 https://hal-ensta-paris.archives-ouvertes.fr/hal-01229263/file/OL_preprint_Bocoum.pdf %L hal-01229263 %U https://hal-ensta-paris.archives-ouvertes.fr/hal-01229263 %~ X %~ ENSTA %~ CNRS %~ X-LOA %~ X-DEP %~ X-DEP-PHYS %~ OPENAIRE %~ ENSTA_LOA %~ UNIV-PARIS-SACLAY %~ X-SACLAY %~ ENSTA-SACLAY