Zobrazeno 1 - 10
of 299
pro vyhledávání: '"Jens Biegert"'
Autor:
Peter Chang, Ragib Ishrak, Nazanin Hoghooghi, Scott Egbert, Daniel Lesko, Stephanie Swartz, Jens Biegert, Gregory B. Rieker, Rohith Reddy, Scott A. Diddams
Publikováno v:
APL Photonics, Vol 9, Iss 10, Pp 106111-106111-9 (2024)
Mid-infrared microscopy is an important tool for biological analyses, allowing a direct probe of molecular bonds in their low energy landscape. In addition to the label-free extraction of spectroscopic information, the application of broadband source
Externí odkaz:
https://doaj.org/article/8e8a042d17e54b25a763ca05b0586949
Publikováno v:
APL Photonics, Vol 9, Iss 8, Pp 080801-080801-7 (2024)
We study and describe the reshaping of ultrashort and broadband mid-IR optical pulses in an ambient atmosphere. While all pulse propagation undergoes dispersion and absorption, which causes pulse reshaping, the effects are strongly pronounced for bro
Externí odkaz:
https://doaj.org/article/d2c5e990fca24ba8adf3d3e4eed49685
Autor:
David Theidel, Viviane Cotte, René Sondenheimer, Viktoriia Shiriaeva, Marie Froidevaux, Vladislav Severin, Adam Merdji-Larue, Philip Mosel, Sven Fröhlich, Kim-Alessandro Weber, Uwe Morgner, Milutin Kovacev, Jens Biegert, Hamed Merdji
Publikováno v:
PRX Quantum, Vol 5, Iss 4, p 040319 (2024)
High-harmonic generation is a light up-conversion process occurring in a strong laser field, leading to coherent bursts of extreme ultrashort broadband radiation [Lewenstein et al., Phys. Rev. A 49, 2117 (1994)]. As a new perspective, we propose that
Externí odkaz:
https://doaj.org/article/85aa79936e6a41faa617dcc4bec468d6
Realizing Attosecond Core-Level X-ray Spectroscopy for the Investigation of Condensed Matter Systems
Autor:
Adam M. Summers, Stefano Severino, Maurizio Reduzzi, Themistoklis P. H. Sidiropoulos, Daniel E. Rivas, Nicola Di Palo, Hung-Wei Sun, Ying-Hao Chien, Iker León, Bárbara Buades, Seth L. Cousin, Stephan M. Teichmann, Tobias Mey, Klaus Mann, Barbara Keitel, Elke Plönjes, Dmitri K. Efetov, Heinrich Schwoerer, Jens Biegert
Publikováno v:
Ultrafast Science, Vol 3 (2023)
Unraveling the exact nature of nonequilibrium and correlated interactions is paramount for continued progress in many areas of condensed matter science. Such insight is a prerequisite to develop an engineered approach for smart materials with targete
Externí odkaz:
https://doaj.org/article/8ad9f21cdb1243078968b6b14ab0ed97
Publikováno v:
Communications Chemistry, Vol 4, Iss 1, Pp 1-7 (2021)
Diffraction imaging offers high spatiotemporal resolution, but fitting complex molecular structure data is expensive. Here, the authors use a machine learning algorithm with a convolutional neural network to retrieve a complex and large molecule, fen
Externí odkaz:
https://doaj.org/article/d2b26194b0f3431e99966ab82846d27b
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p 023002 (2023)
We develop a self-consistent Maxwell-Bloch formalism for the interaction of x-rays with two-dimensional crystalline materials by incorporating the Bloch theorem and Coulomb many-body interaction. This formalism is illustrated for graphene, by calcula
Externí odkaz:
https://doaj.org/article/24a139496dfa4398a75dcb3ebf42d806
Autor:
Matthias Baudisch, Andrea Marini, Joel D. Cox, Tony Zhu, Francisco Silva, Stephan Teichmann, Mathieu Massicotte, Frank Koppens, Leonid S. Levitov, F. Javier García de Abajo, Jens Biegert
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Graphene possesses a nonlinear optical response arising from its electronic dispersion. Here, the authors measure the response of graphene to an ultrafast optical field and provide an explanation of the quantum dynamics of Dirac carriers mediating th
Externí odkaz:
https://doaj.org/article/88b52444de734e01845d45300e726ca3
Autor:
Seth L. Cousin, Nicola Di Palo, Bárbara Buades, Stephan M. Teichmann, M. Reduzzi, M. Devetta, A. Kheifets, G. Sansone, Jens Biegert
Publikováno v:
Physical Review X, Vol 7, Iss 4, p 041030 (2017)
We report on the first streaking measurement of water-window attosecond pulses generated via high-harmonic generation, driven by sub-2-cycle, carrier-to-envelope-phase-stable, 1850-nm laser pulses. Both the central photon energy and the energy bandwi
Externí odkaz:
https://doaj.org/article/eaccde71aed0440f93bd448594e48069
Autor:
Benjamin Wolter, Michael G. Pullen, Matthias Baudisch, Michele Sclafani, Michaël Hemmer, Arne Senftleben, Claus Dieter Schröter, Joachim Ullrich, Robert Moshammer, Jens Biegert
Publikováno v:
Physical Review X, Vol 5, Iss 2, p 021034 (2015)
Strong-field physics is currently experiencing a shift towards the use of mid-IR driving wavelengths. This is because they permit conducting experiments unambiguously in the quasistatic regime and enable exploiting the effects related to ponderomotiv
Externí odkaz:
https://doaj.org/article/34334a7f1deb449c98e0cc4badab0766
Autor:
Dane R Austin, Jens Biegert
Publikováno v:
New Journal of Physics, Vol 16, Iss 11, p 113011 (2014)
We propose a method for programmable shaping of the amplitude and phase of the extreme ultraviolet and x-ray attosecond pulses produced by high-order harmonic generation. It overcomes the bandwidth limitations of existing spectral filters and enables
Externí odkaz:
https://doaj.org/article/2d1e43e272cf47efa2584eca81fc6da0