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Diogo F. P. Cunha, Rui Dias, Manuel J. L. F. Rodrigues and Mikhail I. Vasilevskiy
In the majority of experiments targeting nonlinear optical phenomena, the application of high-intensity pulses drives electrons in graphene into a strongly non-equilibrium state. Under these conditions, conventional perturbation theory falls short in exp...
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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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Yohei Uemura, Toshihiko Yokoyama, Tetsuo Katayama, Shunsuke Nozawa and Kiyotaka Asakura
Ultrafast pump-probe XAFS investigation of photocatalysts.
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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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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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Severin Meister, Hannes Lindenblatt, Florian Trost, Kirsten Schnorr, Sven Augustin, Markus Braune, Rolf Treusch, Thomas Pfeifer and Robert Moshammer
The reaction microscope (REMI) endstation for atomic and molecular science at the free-electron laser FLASH2 at DESY in Hamburg is presented together with a brief overview of results recently obtained. The REMI allows coincident detection of electrons an...
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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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Masakazu Matsubara
Investigation of the interaction of ultrashort laser pulses with magnetically ordered materials has become a fascinating research topic in modern magnetism. Especially, the control of magnetic order by sub-ps laser pulses has become a fundamentally impor...
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Tingyuan Jia, Zeyu Zhang, Zuanming Jin, Xian Lin, Guohong Ma, Zhenxiang Cheng, Juan Du and Yuxin Leng
The ultrafast electron-phonon and spin-lattice coupling process in multiferroic films could give new insight into the optical microscopic measuring in condense matter physics.
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