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Soft x-ray free electron laser microfocus for exploring matter under extreme conditions

Authors :
Nelson, A. J.
Toleikis, S.
Chapman, H.
Bajt, S.
Krzywinski, J.
Chalupsky, J.
Juha, L.
Cihelka, J.
Hajkova, V.
Vysin, L.
Burian, T.
Kozlova, M.
Fäustlin, R. R.
Nagler, B.
Vinko, S. M.
Whitcher, T.
Dzelzainis, T.
Renner, O.
Saksl, K.
Khorsand, A. R.
Heimann, P. A.
Sobierajski, R.
Klinger, D.
Jurek, M.
Pelka, J.
Iwan, Bianca
Andreasson, Jakob
Timneanu, Nicusor
Fajardo, M.
Wark, J. S.
Riley, D.
Tschentscher, T.
Hajdu, Janos
Lee, R. W.
Nelson, A. J.
Toleikis, S.
Chapman, H.
Bajt, S.
Krzywinski, J.
Chalupsky, J.
Juha, L.
Cihelka, J.
Hajkova, V.
Vysin, L.
Burian, T.
Kozlova, M.
Fäustlin, R. R.
Nagler, B.
Vinko, S. M.
Whitcher, T.
Dzelzainis, T.
Renner, O.
Saksl, K.
Khorsand, A. R.
Heimann, P. A.
Sobierajski, R.
Klinger, D.
Jurek, M.
Pelka, J.
Iwan, Bianca
Andreasson, Jakob
Timneanu, Nicusor
Fajardo, M.
Wark, J. S.
Riley, D.
Tschentscher, T.
Hajdu, Janos
Lee, R. W.
Publication Year :
2009

Abstract

We have focused a beam (BL3) of FLASH (Free-electron LASer in Hamburg: lambda = 13.5 nm, pulse length 15 fs, pulse energy 10-40 mu J, 5Hz) using a fine polished off-axis parabola having a focal length of 270 mm and coated with a Mo/Si multilayer with an initial reflectivity of 67% at 13.5 nm. The OAP was mounted and aligned with a picomotor controlled six-axis gimbal. Beam imprints on poly(methyl methacrylate) -PMMA were used to measure focus and the focused beam was used to create isochoric heating of various slab targets. Results show the focal spot has a diameter of <= 1 mu m. Observations were correlated with simulations of best focus to provide further relevant information.

Details

Database :
OAIster
Notes :
English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1235110328
Document Type :
Electronic Resource
Full Text :
https://doi.org/10.1364.OE.17.018271
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