Zobrazeno 1 - 10
of 239
pro vyhledávání: '"Christian Spielmann"'
Autor:
Mikhail Gyrdymov, Jakub Cikhardt, Parysatis Tavana, Nataliya G. Borisenko, Sergey Yu. Gus´kov, Rafael A. Yakhin, Galina A. Vegunova, Wenqing Wei, Jieru Ren, Yongtao Zhao, Dieter H. H. Hoffmann, Zhigang Deng, Weimin Zhou, Rui Cheng, Jie Yang, Jan Novotny, Xiaofei Shen, Alexander Pukhov, Joachim Jacoby, Christian Spielmann, Viacheslav S. Popov, Mikhail E. Veysman, Nikolay E. Andreev, Olga N. Rosmej
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Direct laser acceleration (DLA) of electrons in plasmas of near-critical density (NCD) is a very advancing platform for high-energy PW-class lasers of moderate relativistic intensity supporting Inertial Confinement Fusion research. Experimen
Externí odkaz:
https://doaj.org/article/1e98cd0a940f41a087eceb2e4fd4ae86
Publikováno v:
Photonics, Vol 10, Iss 7, p 709 (2023)
In this study, the influence of hybrid speckle patterns on the contrast-to-noise ratio (CNR) and resolution in pseudo-thermal ghost imaging (PGI) was examined based on the object dimensions in the macroscopic and microscopic regimes. This research sh
Externí odkaz:
https://doaj.org/article/11515802e912469f955d6d2a59b44647
Publikováno v:
Applied Sciences, Vol 13, Iss 12, p 6954 (2023)
This study presents a computational ghost imaging (GI) scheme that utilizes sequenced random speckle pattern illumination. The primary objective is to develop a speckle pattern/sequence that improves computational time without compromising image qual
Externí odkaz:
https://doaj.org/article/24099f22a8dc4afaa5ec3a1e387b87d0
Autor:
Ehsan Eftekhari-Zadeh, Abdallah S. Bensalama, Gholam Hossein Roshani, Ahmed S. Salama, Christian Spielmann, Abdullah M. Iliyasu
Publikováno v:
Photonics, Vol 9, Iss 6, p 382 (2022)
Scale deposition is the accumulation of various materials in the walls of transmission lines and unwanted parts in the oil and gas production system. It is a leading moot point in all transmission lines, tanks, and petroleum equipment. Scale depositi
Externí odkaz:
https://doaj.org/article/5a2816b09622462f87fc3b1103e3829f
Autor:
Teodora Grigorova, Rudrakant Sollapur, Andreas Hoffmann, Alexander Hartung, Anka Schwuchow, Jorg Bierlich, Jens Kobelke, Markus A. Schmidt, Christian Spielmann
Publikováno v:
IEEE Photonics Journal, Vol 10, Iss 4, Pp 1-6 (2018)
Due to unique properties, antiresonant hollow core fibers have found widespread use in various fields of science and application. Particular regarding applications that involve ultrashort pulses, precise knowledge of group velocity dispersion is esse
Externí odkaz:
https://doaj.org/article/fdf4c00f7522446e9607280379443961
Publikováno v:
Applied Sciences, Vol 11, Iss 6, p 2621 (2021)
In this study, we examine the quality of microscale ghost images as a function of the measured histographic signal distribution of the speckle fields from a nonuniform pseudothermal light source. This research shows that the distribution of the detec
Externí odkaz:
https://doaj.org/article/31ae54ff8801435d86201722847167dd
Autor:
Richard Hollinger, Paul Herrmann, Viacheslav Korolev, Maximilian Zapf, Valentina Shumakova, Robert Röder, Ingo Uschmann, Audrius Pugžlys, Andrius Baltuška, Michael Zürch, Carsten Ronning, Christian Spielmann, Daniil Kartashov
Publikováno v:
Nanomaterials, Vol 11, Iss 1, p 4 (2020)
The generation of high order harmonics from femtosecond mid-IR laser pulses in ZnO has shown great potential to reveal new insight into the ultrafast electron dynamics on a few femtosecond timescale. In this work we report on the experimental investi
Externí odkaz:
https://doaj.org/article/957e0268e0444a7f9b305b5fe0571ae0
Publikováno v:
Applied Sciences, Vol 5, Iss 4, Pp 1310-1322 (2015)
In this contribution we present a comparison of the performance of spectrally broadened ultrashort pulses using a hollow-core fiber either filled with argon or sulfur hexafluoride (SF6) for demanding pulse-shaping experiments. The benefits of both ga
Externí odkaz:
https://doaj.org/article/de546bca84d240bbba8fd3adaa26d64f
Autor:
Jozsef Seres, Enikoe Seres, Bjoern Landgraf, Bastian Aurand, Thomas Kuehl, Christian Spielmann
Publikováno v:
Photonics, Vol 2, Iss 1, Pp 104-123 (2015)
High-order harmonic generation is an important mechanism to generate coherent radiation in the few–100-eV spectral range with ultrashort laser pulses. Moreover, a closer inspection of the measured spectra provides unique information about the under
Externí odkaz:
https://doaj.org/article/d158bd89ff3847ccb56d79d80dde9bef
Autor:
Zhanna Samsonova, Sebastian Höfer, Vural Kaymak, Skirmantas Ališauskas, Valentina Shumakova, Audrius Pugžlys, Andrius Baltuška, Thomas Siefke, Stefanie Kroker, Alexander Pukhov, Olga Rosmej, Ingo Uschmann, Christian Spielmann, Daniil Kartashov
Publikováno v:
Physical Review X, Vol 9, Iss 2, p 021029 (2019)
We report on experimental results in a new regime of relativistic light-matter interaction employing midinfrared (3.9-μm wavelength) high-intensity femtosecond laser pulses. In the laser-generated plasma, electrons reach relativistic energies alread
Externí odkaz:
https://doaj.org/article/ed9d74eeb8624589b4c282c8c2f1513b