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Journal Articles

A versatile chamber for x-ray scattering on liquid jets with sample recycling

Open Access
V. Markmann, M. Walther, M. Dartsch, J. Valerio, L. Frenzel, I. Lokteva, F. Westermeier, G. Grübel, F. Lehmkühler
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 93, 125106 (2022)
https://doi.org/10.1063/5.0105529
Published: December 2022
View article titled, A versatile chamber for x-ray scattering on liquid jets with sample recycling
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Journal Articles

Shear-induced ordering in liquid microjets seen by x-ray cross correlation analysis

Open Access
V. Markmann, M. Dartsch, J. Valerio, L. Frenzel, I. Lokteva, M. Walther, F. Westermeier, G. Grübel, F. Lehmkühler
Journal: Structural Dynamics
Struct. Dyn. 7, 054901 (2020)
https://doi.org/10.1063/4.0000038
Published: October 2020
View article titled, Shear-induced ordering in liquid microjets seen by x-ray cross correlation analysis
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Journal Articles

Spatial and temporal pre-alignment of an X-ray split-and-delay unit by laser light interferometry

Open Access
W. Roseker, S. Lee, M. Walther, R. Rysov, M. Sprung, G. Grübel
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 90, 045106 (2019)
https://doi.org/10.1063/1.5089496
Published: April 2019
View article titled, Spatial and temporal pre-alignment of an X-ray split-and-delay unit by laser light interferometry
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Journal Articles

In situ small-angle X-ray scattering environment for studying nanocrystal self-assembly upon controlled solvent evaporation

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I. Lokteva, M. Walther, M. Koof, G. Grübel, F. Lehmkühler
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 90, 036103 (2019)
https://doi.org/10.1063/1.5082685
Published: March 2019
View article titled, In situ small-angle X-ray scattering environment for studying nanocrystal self-assembly upon controlled solvent evaporation
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Journal Articles

Note: Soft X-ray transmission polarizer based on ferromagnetic thin films

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L. Müller, G. Hartmann, S. Schleitzer, M. H. Berntsen, M. Walther, R. Rysov, W. Roseker, F. Scholz, J. Seltmann, L. Glaser, J. Viefhaus, K. Mertens, K. Bagschik, R. Frömter, A. De Fanis, I. Shevchuk, K. Medjanik, G. Öhrwall, H. P. Oepen, M. Martins, M. Meyer, G. Grübel
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 89, 036103 (2018)
https://doi.org/10.1063/1.5018396
Published: March 2018
View article titled, Note: Soft X-ray transmission polarizer based on ferromagnetic thin films
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Journal Articles

Theranostic mercury part 1: A new Hg/Au separation by a resin based method

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M. Walther, O. Lebeda, S. Preusche, H.-J. Pietzsch, J. Steinbach
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1845, 020023 (2017)
https://doi.org/10.1063/1.4983554
Published: May 2017
View article titled, Theranostic mercury part 1: A new Hg/Au separation by a resin based method
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Journal Articles

A liquid jet setup for x-ray scattering experiments on complex liquids at free-electron laser sources

Free
I. Steinke, M. Walther, F. Lehmkühler, P. Wochner, J. Valerio, R. Mager, M. A. Schroer, S. Lee, W. Roseker, A. Jain, M. Sikorski, S. Song, R. Hartmann, M. Huth, L. Strüder, M. Sprung, A. Robert, P. H. Fuoss, G. B. Stephenson, G. Grübel
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 063905 (2016)
https://doi.org/10.1063/1.4953921
Published: June 2016
View article titled, A liquid jet setup for x-ray scattering experiments on complex liquids at free-electron laser sources
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Journal Articles

Controlling intensity and phase of terahertz radiation with an optically thin liquid crystal-loaded metamaterial

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O. Buchnev, J. Wallauer, M. Walther, M. Kaczmarek, N. I. Zheludev, V. A. Fedotov
Journal: Applied Physics Letters
Appl. Phys. Lett. 103, 141904 (2013)
https://doi.org/10.1063/1.4823822
Published: October 2013
View article titled, Controlling intensity and phase of terahertz radiation with an optically thin liquid crystal-loaded metamaterial
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Journal Articles

Endstation for ultrafast magnetic scattering experiments at the free-electron laser in Hamburg

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L. Müller, C. Gutt, S. Streit-Nierobisch, M. Walther, S. Schaffert, B. Pfau, J. Geilhufe, F. Büttner, S. Flewett, C. M. Günther, S. Eisebitt, A. Kobs, M. Hille, D. Stickler, R. Frömter, H. P. Oepen, J. Lüning, G. Grübel
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 84, 013906 (2013)
https://doi.org/10.1063/1.4773543
Published: January 2013
View article titled, Endstation for ultrafast magnetic scattering experiments at the free-electron laser in Hamburg
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Journal Articles

Improved composite targets for small scale 64 Cu production comparing Au- and Pt-foils as 64 Ni backing

Free
M. Walther, S. Preusche, F. Fuechtner, H. J. Pietzsch, J. Steinbach
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1509, 81–83 (2012)
https://doi.org/10.1063/1.4773945
Published: December 2012
View article titled, Improved composite targets for small scale 64 Cu production comparing Au- and Pt-foils as 64 Ni backing
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Journal Articles

Quadratic autocorrelation of free-electron laser radiation and photocurrent saturation in two-photon quantum well infrared photodetectors

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H. Schneider, O. Drachenko, S. Winnerl, M. Helm, M. Walther
Journal: Applied Physics Letters
Appl. Phys. Lett. 89, 133508 (2006)
https://doi.org/10.1063/1.2357936
Published: September 2006
View article titled, Quadratic autocorrelation of free-electron laser radiation and photocurrent saturation in two-photon quantum well infrared photodetectors
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Journal Articles

Domain pinning in GaAs ∕ AlGaAs quantum well infrared photodetectors

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H. Schneider, C. Schönbein, R. Rehm, M. Walther, P. Koidl
Journal: Applied Physics Letters
Appl. Phys. Lett. 88, 051114 (2006)
https://doi.org/10.1063/1.2171767
Published: February 2006
View article titled, Domain pinning in GaAs ∕ AlGaAs quantum well infrared photodetectors
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Journal Articles

Interband type-II miniband-to-bound state diode lasers for the midinfrared

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C. Mermelstein, J. Schmitz, R. Kiefer, M. Walther, J. Wagner
Journal: Applied Physics Letters
Appl. Phys. Lett. 85, 537–539 (2004)
https://doi.org/10.1063/1.1775287
Published: July 2004
View article titled, Interband type-II miniband-to-bound state diode lasers for the midinfrared
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Journal Articles

Determination of the electron capture time in quantum-well infrared photodetectors using time-resolved photocurrent measurements

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S. Steinkogler, H. Schneider, M. Walther, P. Koidl
Journal: Applied Physics Letters
Appl. Phys. Lett. 82, 3925–3927 (2003)
https://doi.org/10.1063/1.1579855
Published: June 2003
View article titled, Determination of the electron capture time in quantum-well infrared photodetectors using time-resolved photocurrent measurements
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Journal Articles

Electron transport studies on In 0.30 Ga 0.70 As/GaAs -quantum-well infrared photodetectors using time-resolved photocurrent measurements

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S. Steinkogler, H. Schneider, R. Rehm, M. Walther, P. Koidl
Journal: Applied Physics Letters
Appl. Phys. Lett. 81, 3401–3403 (2002)
https://doi.org/10.1063/1.1518153
Published: October 2002
View article titled, Electron transport studies on In 0.30 Ga 0.70 As/GaAs -quantum-well infrared photodetectors using time-resolved photocurrent measurements
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Journal Articles

Comprehensive modeling of the electro-optical-thermal behavior of (AlGaIn)(AsSb)-based 2.0 μm diode lasers

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M. Rattunde, C. Mermelstein, J. Schmitz, R. Kiefer, W. Pletschen, M. Walther, J. Wagner
Journal: Applied Physics Letters
Appl. Phys. Lett. 80, 4085–4087 (2002)
https://doi.org/10.1063/1.1481979
Published: June 2002
View article titled, Comprehensive modeling of the electro-optical-thermal behavior of (AlGaIn)(AsSb)-based 2.0 μm diode lasers
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Journal Articles

Room-temperature low-threshold low-loss continuous-wave operation of 2.26 μm GaInAsSb/AlGaAsSb quantum-well laser diodes

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C. Mermelstein, S. Simanowski, M. Mayer, R. Kiefer, J. Schmitz, M. Walther, J. Wagner
Journal: Applied Physics Letters
Appl. Phys. Lett. 77, 1581–1583 (2000)
https://doi.org/10.1063/1.1308537
Published: September 2000
View article titled, Room-temperature low-threshold low-loss continuous-wave operation of 2.26 μm GaInAsSb/AlGaAsSb quantum-well laser diodes
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Journal Articles

Optical switching in a superconductor–semiconductor–superconductor Josephson junction

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G. Bastian, E. O. Göbel, J. Schmitz, M. Walther, J. Wagner
Journal: Applied Physics Letters
Appl. Phys. Lett. 75, 94–96 (1999)
https://doi.org/10.1063/1.124287
Published: July 1999
View article titled, Optical switching in a superconductor–semiconductor–superconductor Josephson junction
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Journal Articles

Response to “Comment on ‘Noise gain and detectivity of n-type GaAs/AlGaAs quantum well infrared photodetectors’ ” [Appl. Phys. Lett. 74 , 892 (1999)]

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C. Schönbein, H. Schneider, R. Rehm, M. Walther
Journal: Applied Physics Letters
Appl. Phys. Lett. 74, 892 (1999)
https://doi.org/10.1063/1.123958
Published: February 1999
View article titled, Response to “Comment on ‘Noise gain and detectivity of n-type GaAs/AlGaAs quantum well infrared photodetectors’ ” [Appl. Phys. Lett. 74 , 892 (1999)]
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Journal Articles

Influence of optical interference on quantum well infrared photodetectors in a 45° waveguide geometry

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H. Schneider, C. Schönbein, M. Walther, P. Koidl, G. Weimann
Journal: Applied Physics Letters
Appl. Phys. Lett. 74, 16–18 (1999)
https://doi.org/10.1063/1.123119
Published: January 1999
View article titled, Influence of optical interference on quantum well infrared photodetectors in a 45° waveguide geometry
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