Cover Picture: Tomographic Reconstruction of Designer Free‐Electron Wave Packets (ChemPhysChem 7/2013). Issue 7 (29th April 2013)

• Record Type: Journal Article
• Authors: Wollenhaupt, Matthias; Lux, Christian; Krug, Marc; Baumert, Thomas
• Is Part Of: Chemphyschem. Volume 14:Issue 7(2013)
• Page Start: 1297
• Page End: 1297
• Publication Date: 2013-04-29
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.05
• DOI: 10.1002/cphc.201390031
• Languages: English
• ISSNs: 1439-4235

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Designer electron wave packets are created by multiphoton ionization of potassium atoms employing polarization‐shaped femtosecond laser pulses, as reviewed on <ext-link ext-link-type="doi" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">p. 1341</ext-link> by M. Wollenhaupt et al. In order to reconstruct the three‐dimensional photoelectron momentum distribution, we use a velocity‐map imaging spectrometer to measure multiple projections at different angles by rotating the pulse with a l/2 plate. This procedure is illustrated for elliptically polarized light in the lower row. The images along the arrows (top left) show the evolution of measured projections towards a prescribed target (T) during an iterative optimization of the polarization‐shaped pulse.<boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg1ztbwf9m" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>