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Sooheyong Lee, Hyusang Kwon, Byeong-Gwan Cho and Eric C. Landahl
We present the technical realization of a high-speed hard X-ray single-photon counting-detection scheme based on a commercial avalanche silicon photodiode and high-speed oscilloscope. The development is motivated by the need to perform pulse-resolved pho...
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Tadashi Togashi, Shigeki Owada, Yuya Kubota, Keiichi Sueda, Tetsuo Katayama, Hiromitsu Tomizawa, Toshinori Yabuuchi, Kensuke Tono and Makina Yabashi
We constructed a synchronized femtosecond optical laser system with spatiotemporal stabilization for pump-probe experiments at SPring-8 Angstrom Compact Free Electron Laser (SACLA). Stabilization of output power and pointing has been achieved with a smal...
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Hiroshi Iwayama, Masanari Nagasaka, Ichiro Inoue, Shigeki Owada, Makina Yabashi and James R. Harries
We demonstrate the applicability of third- and fifth-order harmonics of free-electron laser (FEL) radiation for soft X-ray absorption spectroscopy in the transmission mode at SACLA BL1, which covers a photon energy range of 20 to 150 eV in the fundamenta...
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Jan Metje, Fabiano Lever, Dennis Mayer, Richard James Squibb, Matthew S. Robinson, Mario Niebuhr, Raimund Feifel, Stefan Düsterer and Markus Gühr
We present a highly flexible and portable instrument to perform pump-probe spectroscopy with an optical and an X-ray pulse in the gas phase. The so-called URSA-PQ (German for ?Ultraschnelle Röntgenspektroskopie zur Abfrage der Photoenergiekonversion an Q...
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Alisia Fadini, Sven Reiche, Karol Nass and Jasper J. van Thor
A broadband energy-chirped hard X-ray pulse has been demonstrated at the SwissFEL (free electron laser) with up to 4% bandwidth. We consider the characteristic parameters for analyzing the time dependence of stationary protein diffraction with energy-chi...
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Kai-Jun Yuan and André D Bandrauk
Electron coherence is a fundamental quantum phenomenon in today?s ultrafast physics and chemistry research. Based on attosecond pump?probe schemes, ultrafast X-ray photoelectron imaging of molecules was used to monitor the coherent electron dynamics whic...
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Li Fang, Hui Xiong, Edwin Kukk and Nora Berrah
Molecular dynamics is of fundamental interest in natural science research. The capability of investigating molecular dynamics is one of the various motivations for ultrafast optics. We present our investigation of photoionization and nuclear dynamics in ...
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Nastasia Mukharamova, Sergey Lazarev, Janne-Mieke Meijer, Matthieu Chollet, Andrej Singer, Ruslan P. Kurta, Dmitry Dzhigaev, Oleg Yu. Gorobtsov, Garth Williams, Diling Zhu, Yiping Feng, Marcin Sikorski, Sanghoon Song, Anatoly G. Shabalin, Tatiana Gurieva, Elena A. Sulyanova, Oleksandr M. Yefanov and Ivan A. Vartanyants
We present results of the studies of dynamics in colloidal crystals performed by pump-probe experiments using an X-ray free-electron laser (XFEL). Colloidal crystals were pumped with an infrared laser at a wavelength of 800 nm with varying power and prob...
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Sandeep Kumar, Alexandra S. Landsman and Dong Eon Kim
High power attosecond (as) X-ray pulses are in great demand for ultrafast dynamics and high resolution microscopy. We numerically demonstrate the generation of a ~230 attosecond, 1.5 terawatt (TW) pulse at a photon energy of 1 keV, and a 115 attosecond, ...
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