Prof. Eckhart Förster Profile

Prof. Eckhart Förster

at Helmholtz Institute Jena

SPIE Involvement:

Author

Publications (34)

Proceedings Article | 29 September 2009 Paper

Paper

Perspective for high energy density studies on x-ray FELs

R. Lee, B. Nagler, U. Zastrau, R. Fäustlin, S. Vinko, T. Whitcher, R. Sobierajski, J. Krzywinski, L. Juha, A. Nelson, S. Bajt, K. Budil, R. Cauble, T. Bornath, T. Burian, J. Chalupsky, H. Chapman, J. Cihelka, T. Döppner, T. Dzelzainis, S. Düsterer, M. Fajardo, E. Förster, C. Fortmann, S. Glenzer, S. Göde, G. Gregori, V. Hajkova, P. Heimann, M. Jurek, F. Khattak, A. Khorsand, D. Klinger, M. Kozlova, T. Laarmann, H.-J. Lee, K.-H. Meiwes-Broer, P. Mercere, W. Murphy, A. Przystawik, R. Redmer, H. Reinholz, D. Riley, G. Röpke, K. Saksl, R. Thiele, J. Tiggesbäumker, S. Toleikis, T. Tschentscher, I. Uschmann, R. Falcone, R. Shepherd, J. Hastings, W. White, J. Wark

Proceedings Volume 7451, 74510E (2009) https://doi.org/10.1117/12.825349

KEYWORDS: Free electron lasers, X-rays, Extreme ultraviolet, Electrons, Absorption, Luminescence, Liquid crystal lasers, Photons, Fusion energy, Chemical species

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Proceedings Article | 29 September 2009 Paper

Paper

Soft x-ray Thomson scattering in warm dense hydrogen at FLASH

R. Fäustlin, S. Toleikis, Th. Bornath, T. Döppner, S. Düsterer, E. Förster, C. Fortmann, S. Glenzer, S. Göde, G. Gregori, R. Irsig, T. Laarmann, H. Lee, B. Li, K.-H. Meiwes-Broer, J. Mithen, A. Przystawik, H. Redlin, R. Redmer, H. Reinholz, G. Röpke, F. Tavella, R. Thiele, J. Tiggesbäumker, I. Uschmann, U. Zastrau, Th. Tschentscher

Proceedings Volume 7451, 74510D (2009) https://doi.org/10.1117/12.825958

KEYWORDS: Free electron lasers, Plasmas, Thomson scattering, Hydrogen, X-rays, Photons, Scattering, Extreme ultraviolet, Laser scattering, Laser optics

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Proceedings Article | 23 May 2007 Paper

Paper

Optimization and control of bright, ultrafast laser driven x-ray sources

L. Gizzi, A. Giulietti, D. Giulietti, P. Koester, L. Labate, T. Levato, F. Zamponi, T. Kämpfer, I. Uschmann, E. Förster, R. Sauerbrey

Proceedings Volume 6634, 66341H (2007) https://doi.org/10.1117/12.742103

KEYWORDS: Electrons, X-rays, X-ray sources, Femtosecond phenomena, Titanium, Solids, Pulsed laser operation, Charge-coupled devices, Aluminum, Signal detection

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Proceedings Article | 12 October 2005 Paper

Paper

Ultrafast structural changes in germanium triggered by femtosecond laser pulses

Eckhart Förster, Andreas Morak, Tino Kämpfer, Ingo Uschmann, Ortrud Wehrhan, Flavio Zamponi

Proceedings Volume 5958, 59581Z (2005) https://doi.org/10.1117/12.641082

KEYWORDS: X-rays, Crystals, Picosecond phenomena, Germanium, Ultrafast phenomena, Femtosecond phenomena, X-ray optics, X-ray diffraction, Laser crystals, Photons

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Proceedings Article | 10 June 2004 Paper

Paper

High-precision x-ray diagnostics of laser-produced plasmas

Oldrich Renner, Eckhart Foerster, Ingo Uschmann, Klaus Eidmann

Proceedings Volume 5482, (2004) https://doi.org/10.1117/12.558575

KEYWORDS: Plasmas, Crystals, Aluminum, Spectrometers, Sensors, Diagnostics, Stereolithography, Satellites, Radiation effects, Carbon

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Proceedings Article | 7 January 2004 Paper

Paper

Intense high-order harmonics generated with femtosecond laser pulses at relativistic intensities interacting with high-density plasmas

Ulrich Teubner, Ulrich Wagner, Ulrich Andiel, Francesca Pisani, Klaus Eidmann, George Tsakiris, Theodor Schlegel, Eckhart Foerster, Klaus Witte

Proceedings Volume 5196, (2004) https://doi.org/10.1117/12.503689

KEYWORDS: Plasmas, Pulsed laser operation, Solids, Femtosecond phenomena, Carbon, Optical filters, Mirrors, Modulation, Extreme ultraviolet, Optical simulations

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Proceedings Article | 12 December 2003 Paper

Paper

X-ray spectroscopic study on femto- and pico-second laser irradiated solid and gaseous targets

Masayuki Suzuki, Hiroyuki Daido, Fumiaki Matsuoka, Etsuya Yanase, Mamiko Nishiuchi, Keiko Suto, A. Sasaki, Koichi Yamakawa, Tetsuya Kawachi, Keisuke Nagashima, Takatsugu Oketa, Takeyoshi Nakayama, Ingo Uschmann, Eckhart Foerster, Henryk Fiedorowicz

Proceedings Volume 5228, (2003) https://doi.org/10.1117/12.536791

KEYWORDS: X-rays, Pulsed laser operation, Plasma, Spectroscopy, Laser energy, Krypton, Nitrogen, Oxygen, Ions, Xenon

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Proceedings Article | 12 December 2003 Paper

Paper

X-ray emission diagnostics of the densest part of plasma at laser-exploded foils

Jiri Limpouch, Oldrich Renner, E. Krousky, Bozena Kralikova, Jiri Skala, Eckhart Forster, A. Lübcke, Ingo Uschmann, Alexey Iskakov, L. Kocbach, Peter Loboda, Valeria Popova, I. Litvinenko

Proceedings Volume 5228, (2003) https://doi.org/10.1117/12.537271

KEYWORDS: Plasma, Aluminum, Atomic, molecular, and optical physics, Ions, X-rays, Spatial resolution, Pulsed laser operation, Diagnostics, Absorption, Doppler effect

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Proceedings Article | 14 November 2003 Paper

Paper

Femtosecond x-ray diagnostic

Davide Boschetto, Christian Rischel, Olivier Albert, Jean Etchepare, Ingo Uschmann, S. Fourmaux, Daniele Hulin, Eckhart Forster, Antoine Rousse

Proceedings Volume 5147, (2003) https://doi.org/10.1117/12.537507

KEYWORDS: X-rays, Femtosecond phenomena, X-ray diffraction, Diffraction, Ultrafast phenomena, Crystals, X-ray sources, X-ray optics, Pulsed laser operation, Plasma

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Proceedings Article | 14 November 2001 Paper

Paper

X-ray optics for study of ultrafast processes in crystalline samples

Eckhart Foerster, Ingo Uschmann, O. Wehrhan, Andreas Morak, Thomas Feurer, Roland Sauerbrey, D. Boschetto, Antoine Rousse, Daniele Hulin

Proceedings Volume 4504, (2001) https://doi.org/10.1117/12.448461

KEYWORDS: Crystals, X-rays, Reflection, X-ray optics, X-ray diffraction, X-ray imaging, Ultrafast phenomena, X-ray sources, Semiconductors, Reflectivity

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Non-thermal melting of semiconductor crystals, phase transitions on a sub-picosecond time scale can be studied by optical pump x-ray probe experiments. Powerful femtosecond lasers deliver brilliant ultrashort K_(alpha ) pulses on a time scale from 100 fs to 1 ps that can be optimized for these pump-probe experiments. These experiments consist of two diffracting elements: (i) a bent crystal imaging the flash x-ray source in a narrow spectral window; and (ii) the sample crystal diffracting the ultrashort x-ray pulse. As penetration depths of optical pump beam are usually much shorter than x-ray extinction depths, best sensitivity to ultrafast structural changes is obtained for minimum x-ray extinction depths. This can be achieved by selecting samples containing heavy elements, thin crystalline film samples and by using asymmetric Bragg reflections, respectively. Several theoretical codes have been developed to optimize design of the instruments. X-ray topographic cameras and diffractometers were modified for fabrication and characterization of 2D bent crystals. Best practical results were obtained when structurally perfect wafers of Si, Ge, and quartz crystals were prepared while monitored by x-ray topography and diffractometry. After a final check of x-ray imaging and reflection properties of the toroidal crystals, monochromatic x-ray beam and laser pump beam are adjusted spatially to coincide on the sample crystal. Because converging x-rays impinge on the sample crystal, its rocking curve can be registered as a spatial distribution on the detector. In comparison to synchrotron experiments where about 10⁴ pulses must be integrated, in these experiments rocking curves can be recorded in a single or in a few laser shots. Ultrafast processes are studied in Langmuir Blodgett films containing Cd, in bulk semiconductors, such as InSb, and in CdTe semiconductor films. Focused, pulsed monochromatic x-rays have been transmitted through biological samples to register many reflections, which opens the way to ultrafast studies in structural biology.

Proceedings Article | 14 November 2001 Paper

Paper

Measurements of the integrated reflectivity of a mica crystal for different orders of reflection

Sang Lee, Jun Bak, Yeong Jung, Manfred Bitter, K. Hill, O. Wehrhan, Eckhart Foerster

Proceedings Volume 4501, (2001) https://doi.org/10.1117/12.448492

KEYWORDS: Crystals, Reflectivity, Mica, X-rays, Spectroscopy, Reflection, Kinematics, Error analysis, Calibration, Spectral resolution

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Proceedings Article | 14 November 2001 Paper

Paper

Femtosecond solid-liquid phase transition studied with ultrafast x-ray diffraction

S. Fourmaux, Antoine Rousse, Christian Rischel, Ingo Uschmann, Stephane Sebban, Philippe Balcou, G. Grillon, Eckhart Forster, Jean-Claude Gauthier, Daniele Hulin

Proceedings Volume 4504, (2001) https://doi.org/10.1117/12.448474

KEYWORDS: X-rays, X-ray diffraction, Femtosecond phenomena, Ultrafast phenomena, Semiconductors, Gallium arsenide, Semiconductor lasers, Plasma, Picosecond phenomena, Crystals

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Proceedings Article | 23 April 2001 Paper

Paper

Aluminium K-shell emission of laser-generated hot plasma at solid density in high spectral and subpicosecond time resolution

U. Andiel, Klaus Eidmann, Roberto Mancini, I. Golovkin, Ingo Uschmann, Eckhart Foerster, Klaus-Juergen Witte

Proceedings Volume 4424, (2001) https://doi.org/10.1117/12.425540

KEYWORDS: Plasma, Aluminum, Crystals, Spectroscopy, X-rays, Solids, Streak cameras, Pulsed laser operation, Spectral resolution, Carbon

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Proceedings Article | 23 April 2001 Paper

Paper

Laser-induced satellites in emission of hydrogenic aluminum

Oldrich Renner, Olivier Peyrusse, P. Sondhauss, E. Krousky, Eckhart Foerster

Proceedings Volume 4424, (2001) https://doi.org/10.1117/12.425560

KEYWORDS: Plasma, Satellites, Aluminum, Ions, X-rays, Plasma spectroscopy, Spectroscopy, Laser applications, Plasma diagnostics, Laser spectroscopy

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Proceedings Article | 23 April 2001 Paper

Paper

Line x-ray emission from Al targets irradiated by high-intensity variable-length laser pulses

Jiri Limpouch, Oldrich Renner, E. Krousky, Ingo Uschmann, Eckhart Foerster, Mikhail Kalachnikov, Peter Nickles

Proceedings Volume 4424, (2001) https://doi.org/10.1117/12.425555

KEYWORDS: X-rays, Picosecond phenomena, Pulsed laser operation, Plasmas, Aluminum, Optical simulations, Absorption, Laser energy, Calibration, Spectral calibration

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Proceedings Article | 25 January 2001 Paper

Paper

Time-resolved x-ray diffraction with subpicosecond x-ray pulses

Ingo Uschmann, Eckhart Foerster, Paul Gibbon, Christian Reich, Thomas Feurer, Andreas Morak, Roland Sauerbrey, Antoine Rousse, Patrick Audebert, Jean-Paul Geindre, Jean-Claude Gauthier

Proceedings Volume 4143, (2001) https://doi.org/10.1117/12.413678

KEYWORDS: Crystals, X-rays, Pulsed laser operation, X-ray diffraction, Plasmas, Solids, Diffraction, Photons, Absorption, Picosecond phenomena

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Proceedings Article | 11 January 2000 Paper

Paper

Diagnostics and applications of laser-produced plasmas

Eckhart Foerster, Randolf Butzbach, Paul Gibbon, Ingo Uschmann, Hiroyuki Daido, Kazuhisa Fujita, Hiroaki Nishimura

Proceedings Volume 3886, (2000) https://doi.org/10.1117/12.375126

KEYWORDS: Crystals, X-rays, Plasmas, X-ray imaging, Laser crystals, Diagnostics, X-ray diffraction, X-ray lasers, X-ray optics, Spectroscopy

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Proceedings Article | 11 January 2000 Paper

Paper

X-ray spectroscopic analysis of the influence of low-modal nonuniformity on the formation of a hot spark

Yoshihiro Ochi, Mitsuhiro Fukao, J. Sunahara, Hiroaki Nishimura, Kazuhisa Fujita, Tohru Kawamura, Hiroyuki Shiraga, Noriaki Miyanaga, Hiroshi Azechi, Hideaki Takabe, Kunioki Mima, Tatsuhiko Yamanaka, Sadao Nakai, Randolf Butzbach, Ingo Uschmann, Eckhart Foerster

Proceedings Volume 3886, (2000) https://doi.org/10.1117/12.375142

KEYWORDS: X-rays, Spectroscopy, Fusion energy, Argon, Picosecond phenomena, Laser irradiation, Spectrum analysis, X-ray imaging, Diagnostics, Plasma

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Proceedings Article | 21 October 1999 Paper

Paper

Development of intense short-wavelength Ni-like soft x-ray lasers toward the water window

Hiroyuki Daido, Stephane Sebban, Huajing Tang, Noriyuki Sakaya, Yusuke Tohyama, Takayoshi Norimatsu, Kunioki Mima, Yoshiaki Kato, Shiji Wang, Yuan Gu, Guanlong Huang, Kensuki Murai, Randolf Butzbach, Ingo Uschmann, Marcus Vollbrecht, Eckhart Foerster

Proceedings Volume 3776, (1999) https://doi.org/10.1117/12.366687

KEYWORDS: X-ray lasers, Ytterbium, Plasma, X-rays, Spectroscopy, Tantalum, Crystals, Picosecond phenomena, Optical pumping, Charge-coupled devices

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Proceedings Article | 1 December 1998 Paper

Paper

Femtosecond time-resolved x-ray diffraction with a laser-produced plasma x-ray source

Antoine Rousse, Christian Rischel, Ingo Uschmann, P. Albouy, Jean-Paul Geindre, Patrick Audebert, Jean-Claude Gauthier, Eckhart Foerster, Jean-Louis Martin, Andre Antonetti

Proceedings Volume 3451, (1998) https://doi.org/10.1117/12.331846

KEYWORDS: X-rays, X-ray diffraction, Crystals, X-ray sources, Cadmium, Chemical species, Ultrafast phenomena, X-ray optics, Picosecond phenomena, Plasma

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Proceedings Article | 1 December 1998 Paper

Paper

Time-resolved experiments using laser-plasma x-ray sources

Eckhart Foerster, Ingo Uschmann, Paul Gibbon, T. Feurer

Proceedings Volume 3451, (1998) https://doi.org/10.1117/12.331847

KEYWORDS: Crystals, X-rays, Pulsed laser operation, X-ray sources, Synchrotrons, X-ray optics, Laser crystals, Femtosecond phenomena, Photons, Reflection

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Proceedings Article | 14 October 1997 Paper

Paper

Laser-driven x-ray source for diagnostic radiology

Andrzej Krol, Jean-Claude Kieffer, Eckhart Foerster

Proceedings Volume 3157, (1997) https://doi.org/10.1117/12.283994

KEYWORDS: X-rays, X-ray sources, Mammography, Pulsed laser operation, Iodine, Arteries, Laser energy, Plasma, Angiography, Diagnostics

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Proceedings Article | 12 April 1996 Paper

Paper

X-ray emission from ultrashort UV-laser-pulse-produced plasmas

U. Teubner, Ingo Uschmann, Wolfgang Theobald, Eckhart Foerster

Proceedings Volume 2770, (1996) https://doi.org/10.1117/12.238027

KEYWORDS: X-rays, Plasmas, Satellites, Aluminum, Carbon, Ions, Spectrographs, Picosecond phenomena, Solids, Pulsed laser operation

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Proceedings Article | 25 September 1995 Paper

Paper

Development of a novel x-ray focusing technique using crystals with a two-dimensionally modulated surfaces

William Chang, Ernst-Bernhard Kley, Hans-Joerg Fuchs, Bernd Schnabel, Eckhart Foerster, Felix Chukhovskii

Proceedings Volume 2516, (1995) https://doi.org/10.1117/12.221684

KEYWORDS: Crystals, Modulation, X-rays, Reflection, Diffraction, Silicon, X-ray optics, X-ray diffraction, Near field diffraction, Geometrical optics

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Proceedings Article | 18 September 1995 Paper

Paper

Vertical dispersion methods in x-ray spectroscopy of high-temperature plasmas

Oldrich Renner, Thomas Missalla, Eckhart Foerster

Proceedings Volume 2523, (1995) https://doi.org/10.1117/12.220976

KEYWORDS: Crystals, Spectroscopy, Plasmas, Spatial resolution, X-rays, Sensors, Spectral resolution, Spectroscopes, Diffraction, Dispersion

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Proceedings Article | 18 September 1995 Paper

Paper

X-ray spectroscopy and imaging of a plasma collision

Claude Chenais-Popovics, Ovidiu Rancu, P. Renaudin, Jean-Claude Gauthier, F. Gilleron, O. Lindenmeyer, H. Kawagoshi, M. Dirksmoeller, Ingo Uschmann, Thomas Missalla, P. Sondhauss, Eckhart Foerster, Oldrich Renner, E. Krousky, Henri Pepin, O. Larroche, Olivier Peyrusse, Terry Shepard

Proceedings Volume 2523, (1995) https://doi.org/10.1117/12.220983

KEYWORDS: Plasma, Crystals, Spectrographs, Imaging spectroscopy, Ions, X-rays, Temperature metrology, Aluminum, X-ray imaging, Laser crystals

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Proceedings Article | 18 September 1995 Paper

Paper

Two-bent-crystal schemes for monochromatic x-ray imaging

Eckhart Foerster, William Chang, M. Dirksmoeller

Proceedings Volume 2523, (1995) https://doi.org/10.1117/12.220974

KEYWORDS: Crystals, X-rays, Spatial resolution, Plasma, X-ray imaging, Optical components, Sensors, Point spread functions, X-ray optics, Imaging systems

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Proceedings Article | 20 June 1995 Paper

Paper

Measurements and calculations of flat and spherically bent mica crystals reflectivity and using them for different applications in the spectral range 1-19 A

Tatiana Pikuz, Anatoly Faenov, Eckhart Foerster, Johannes Wolf, O. Wehrhan, Josef Heinisch, G. Hoelzer, Marcus Vollbrecht, Sergey Pikuz, Vera Romanova, Tatyana Shelkovenko

Proceedings Volume 2515, (1995) https://doi.org/10.1117/12.212613

KEYWORDS: Crystals, Ions, Mica, Reflectivity, Plasma, Spherical lenses, Reflection, Laser crystals, X-rays, Molybdenum

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Proceedings Article | 11 November 1994 Paper

Paper

Characterization of concave-curved diffractors for spectrometers in 2D x-ray optical instrumentations

William Chang, O. Wehrhan, Eckhart Foerster, Felix Chukhovskii

Proceedings Volume 2279, (1994) https://doi.org/10.1117/12.193155

KEYWORDS: Crystals, Reflection, X-rays, Reflectivity, Spectrometers, Laser crystals, X-ray diffraction, Silicon, Positron emission tomography, X-ray characterization

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Proceedings Article | 11 November 1994 Paper

Paper

X-ray optics: imaging of a plasma source with a concave-curved crystal using ray-tracing and wave-optics approaches

Felix Chukhovskii, Eckhart Foerster, William Chang, M. Dirksmoeller, Ingo Uschmann

Proceedings Volume 2279, (1994) https://doi.org/10.1117/12.193145

KEYWORDS: Crystals, X-rays, X-ray imaging, Plasma, X-ray optics, X-ray diffraction, X-ray sources, Crystal optics, Near field diffraction, Reflection

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Proceedings Article | 1 February 1994 Paper

Paper

High-resolving x-ray spectrographs for laser-generated plasmas

Eckhart Foerster, T. Missalla, Ingo Uschmann, Josef Heinisch, Oldrich Renner, M. Kopecky, E. Krousky, Justin Wark

Proceedings Volume 2015, (1994) https://doi.org/10.1117/12.167994

KEYWORDS: Crystals, Spectroscopy, X-rays, Spectral resolution, Reflectivity, Plasmas, X-ray lasers, Chlorine, Spectrographs, Satellites

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Proceedings Article | 1 February 1994 Paper

Paper

Monochromatic x-ray imaging with streak and framing cameras

Eckhart Foerster, Ingo Uschmann, M. Dirksmoeller, Claude Chenais-Popovics, P. Renaudin, Ovidiu Rancu, Jean-Claude Gauthier

Proceedings Volume 2015, (1994) https://doi.org/10.1117/12.168012

KEYWORDS: Crystals, Plasmas, Sensors, Cameras, X-rays, Aluminum, Spatial resolution, X-ray imaging, Microscopes, Streak cameras

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Proceedings Article | 23 April 1993 Paper

Paper

Monochromatic x-ray imaging of laser-produced plasma

Eckhart Foerster, Ingo Uschmann

Proceedings Volume 1980, (1993) https://doi.org/10.1117/12.144507

KEYWORDS: Crystals, X-rays, Laser crystals, X-ray imaging, Plasma, Aluminum, Reflection, Spatial resolution, iodine lasers, Optics manufacturing

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Proceedings Article | 23 April 1993 Paper

Paper

Limits of high-resolution x-ray spectroscopy of laser-produced plasma

Oldrich Renner, M. Kopecky, E. Krousky, Eckhart Foerster, Justin Wark

Proceedings Volume 1980, (1993) https://doi.org/10.1117/12.144506

KEYWORDS: Crystals, Spectroscopy, Plasma, Spectral resolution, Spatial resolution, Sensors, Laser spectroscopy, Plasma spectroscopy, Spectroscopes, iodine lasers

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Showing 5 of 34 publications

Conference Committee Involvement (2)

Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II

2 August 2005 | San Diego, California, United States

Laser-Generated and Other Laboratory X-Ray and EUV Sources, Optics, and Applications

4 August 2003 | San Diego, California, United States

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