Publications of users

Here we collect a few representative publications of groups/customers that purchased the Amsterdam Cantilever Piezo Valve for their state-of-the-art research projects. It shows the broad applicability of this innovative piezo valve technology for the production of short and intense atomic and molecular beams.

An up-to-date list of publications and applications referring to the Amsterdam Piezo Valve can be found at this Google Scholar link.

Two-State Wave Packet for Strong Field-Free Molecular Orientation (Phys. Rev. Lett. 2015 pdf link)

Sebastian Trippel,¹ Terry Mullins,¹ Nele L. M. Müller,¹ Jens S. Kienitz,^1,2 Rosario González-Férez,^2,3 and Jochen Küpper^1,2,4

¹Center for Free-Electron Laser Science, DESY, Notkestrasse 85, 22607 Hamburg, Germany

²The Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

³Instituto Carlos I de Física Teórica y Computacional and Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain

⁴Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

(published 10 March 2015)

Abstract

We demonstrate strong laser-field-free orientation of absolute-ground-state carbonyl sulfide molecules.The molecules are oriented by the combination of a 485-ps-long nonresonant laser pulse and a weak static electric field. The edges of the laser pulse create a coherent superposition of two rotational states resulting in revivals of strong transient molecular orientation after the laser pulse. The experimentally attained degree of orientation cos θ_i ≈ 0.6 corresponds to the theoretical maximum for mixing of the two states. Switching off the dc field would provide the same orientation completely field free.

Sub-micron proximal probe thermal desorption and laser mass spectrometry on painting cross sections (Anal. Methods 2014 pdf link)

Shawn C. Owens,^a Jacob A. Berenbeim,^a Catherine Schmidt Patterson,^b Eoghan P. Dillonc and M. S. de Vries^a

^aUniversity of California Santa Barbara, Department of Chemistry and Biochemistry, Santa Barbara, CA, USA.

^bGetty Conservation Institute, 1200 Getty Center Drive, Suite 700, Los Angeles, CA, USA.

^cAnasys Instruments, 325 Chapala St, Santa Barbara, CA, USA.

Abstract

We demonstrate sub-micron, atomic force microscopy (AFM) proximal probe desorption of organic dyes, and subsequent detection via laser mass spectrometry. A nanothermal analysis (nano-TA) probe tip in contact with a surface is heated (10 000 .C s.1) to induce thermal desorption, creating depression sizes ranging from 360–1500 nm in diameter and 20–100 nm in depth. Desorbed material is drawn through a heated capillary via vacuum, and deposits onto a graphite sample bar. Laser desorption, followed by supersonic jet cooling and either resonant two-photon ionization (R2PI) or non-resonant ionization mass spectrometry is used to characterize the transferred material. Individual, microscopic layers of organic dyes within painting cross-sections were successfully analyzed using this new approach. Separating the AFM thermal desorption step from the detection step allows for the use of analytical techniques appropriate for individual samples of material, desorbed with high spatial resolution.

High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters (SPIE 2015 pdf link)

Juranic, PN^[¹^] et al.

[ 1 ] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[ 2 ] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

[ 3 ] Univ Pecs, H-7624 Pecs, Hungary

[ 4 ] DESY, D-22607 Hamburg, Germany

[ 5 ] European XFEL GmbH, D-22761 Hamburg, Germany

[ 6 ] Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan

[ 7 ] RIKEN, SPring Ctr 8, Sayo, Hyogo 6795148, Japan

^Abstract

^{The accurate measurement of the arrival time of a hard X-ray free electron laser (FEL) pulse with respect to a laser is of utmost importance for pump-probe experiments proposed or carried out at FEL facilities around the world. This manuscript presents the latest device to meet this challenge, a THz streak camera using Xe gas clusters, capable of pulse arrival time measurements with an estimated accuracy of several femtoseconds. An experiment performed at SACLA demonstrates the performance of the device at photon energies between 5 and 10 keV with variable photon beam parameters.}

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