Results 41 to 50 of about 27,399 (223)

Bright continuously tunable vacuum ultraviolet source for ultrafast spectroscopy

Communications Physics
Ultrafast electron dynamics drive phenomena such as photochemical reactions, catalysis, and light harvesting. To capture such dynamics in real-time, femtosecond to attosecond light sources are extensively used.
Lucie Jurkovičová, Ltaief Ben Ltaief, Andreas Hult Roos, Ondřej Hort, Ondřej Finke, Martin Albrecht, Ziaul Hoque, Eva Klimešová, Akgash Sundaralingam, Roman Antipenkov, Annika Grenfell, Alexandr Špaček, Wojciech Szuba, Maria Krikunova, Marcel Mudrich, Jaroslav Nejdl, Jakob Andreasson   +16 more
doaj   +1 more source

Laser cooling of new atomic and molecular species with ultrafast pulses

, 2003
We propose a new laser cooling method for atomic species whose level structure makes traditional laser cooling difficult. For instance, laser cooling of hydrogen requires single-frequency vacuum-ultraviolet light, while multielectron atoms need single ...
D. Kielpinski, G. Gabrielse, H. J. Metcalf, J. D. Weinstein, J. T. M. Walraven, J. Walz, M. A. Persaud   +6 more
core   +2 more sources

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Studies on Novel Cs2Te Photocathode Based on Surface Plasmon Polaritons

Yuanzineng kexue jishu
Cathodes serve as sources of electron beams, and their performance plays a great part of beam quality in electron accelerators. The introduction of surface plasmon polaritons (SPPs) into different photocathodes has been investigated to increase their ...
LIU Zishuo1, DAI Zeyi1, GUAN Jiabao1, LIU Lanxin1, ZHONG Jianhua1, JIANG Zenggong2, , WANG Jike1, , NIE Yuancun1,
doaj   +1 more source

Using the longitudinal space charge instability for generation of vacuum ultraviolet and x-ray radiation

Physical Review Special Topics. Accelerators and Beams, 2010
Longitudinal space charge (LSC) driven microbunching instability in electron beam formation systems of x-ray free-electron lasers (FELs) is a recently discovered effect hampering beam instrumentation and FEL operation.
E. A. Schneidmiller, M. V. Yurkov
doaj   +1 more source

XUV Frequency Combs via Femtosecond Enhancement Cavities

, 2012
We review the current state of tabletop extreme ultraviolet (XUV) sources based on high harmonic generation (HHG) in femtosecond enhancement cavities (fsEC).
Arissian L, Arthur K Mills, Chotas H, David J Jones, Gaarde M B, Gherman T, Gohle C, Hammond T J, Hehlen M P, Heyl C M, Jones R J, Lam M H, Matthew H C Lam, T J Hammond, Ullrich J, Yost D   +15 more
core   +1 more source

Optical black hole lasers [PDF]

, 2012
Using numerical simulations we show how to realise an optical black hole laser, i.e. an amplifier formed by travelling refractive index perturbations arranged so as to trap light between a white and a black hole horizon.
Arane, Tal, Faccio, Daniele, Lamperti, Marco, Leonhardt, Ulf   +3 more
core   +1 more source

The Influence of Annealing on the Sb Layer in the Synthesis of [001]‐Oriented Sb2Se3 Film for Photoelectrochemical Hydrogen Gas Generation

Advanced Functional Materials, EarlyView.
[001]‐oriented Sb2Se3 film with improved crystallinity and adjusted composition is achieved via a new thermal treatment approach consisting of preliminary annealing of the Sb layer before its selenization. The findings of this work demonstrate enhanced charge carriers' transportation, a stable performance, and an improvement of H2 generation from ...
Magno B. Costa, Moisés A. de Araújo, Joaquim Puigdollers, Pablo Ortega, Teresa Andreu, Cristobal Voz, Edgardo Saucedo, Lucia H. Mascaro   +7 more
wiley   +1 more source

Secondary electron emission in a photocathode rf gun

Physical Review Special Topics. Accelerators and Beams, 2005
During the last decades, photocathode rf guns have been proven to be successful for providing very high quality electron beams required for vacuum ultraviolet and x-ray free-electron lasers.
J. H. Han, M. Krasilnikov, K. Flöttmann
doaj   +1 more source

Design study of time-preserving grating monochromators for ultrashort pulses in the extreme-ultraviolet and soft X-rays [PDF]

, 2017
The design of grating-based instruments to handle and condition coherent ultrafast pulses in the extreme-ultraviolet is discussed. The main application of such instruments is the monochromatization of high-order laser harmonics and free-electron-laser ...
Fabris, Nicola, Frassetto, Fabio, Miotti, Paolo, Poletto, Luca   +3 more
core   +3 more sources