A  publication from Prof. Tony Heinz group with Model IMPULSE from Clark-MXR. Dezheng Sun, Yi Rao, Georg A. Reider, Gugang Chen, Yumeng You, Louis Brézin, Avetik R. Harutyunyan, and Tony F. Heinz Monolayer MoS2 is a direct-gap two-dimensional semiconductor that exhibits strong electron–hole interactions, leading to the formation of stable excitons and trions. Here we report the existence of efficient exciton–exciton annihilation, a four-body interaction, in this material. Exciton–exciton annihilation was identified experimentally in ultrafast transient absorption measurements through the emergence of a decay channel varying quadratically with exciton density. The rate of exciton–exciton annihilation [...]

Clark-MXR Product:  Model IMPULSE Shengmin Zhang, Cong Wang, Xuefeng Cui, Yanan Wang, Adam Argondizzo, Jin Zhao, and Hrvoje Petek Department of Physics and Astronomy and Pittsburgh Quantum Institute, University of Pittsburgh, & Department of Physics and ICQD/Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei,  China. We investigate the electronic structure and photoexcitation dynamics of alkali atoms (Rb and Cs) chemisorbed on transition-metal Ru(0001) single-crystal surface by angle- and time-resolved multiphoton photoemission. Three- and four-photon photoemission (3PP and 4PP) spectroscopic features due to the σ and π resonances [...]

Traditional techniques used to extract DNA from thin sections of rock samples for amplification and analysis will often introduce contamination from the surrounding material. This is especially true when extracting microscopic inclusion in the presence of nearby unwanted materials. Our femtosecond laser micromachining capability offers a way to address these critical concerns. This image shows a cylinder machined in a thin layer of a rock. The inclusion is isolated with negligible damage to either the center section or the surrounding area. And so that the trapped bio-matter in the middle of the circle can be [...]

Republished from Imaging of Carrier Dynamics by Second-Generation 4D Scanning UEM enabled by Model IMPULSE from Clark-MXR. A new publication from Prof. Omar Abdelsaboor group at KAUST Jingya Sun, Vasily A. Melnikov, Jafar I. Khan, and Omar F. Mohammed Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia Abstract In the fields of photocatalysis and photovoltaics, ultrafast dynamical processes, including carrier trapping and recombination on material surfaces, are among the key factors that determine the overall energy conversion [...]

Researchers at University of Bern and co-workers used Clark-MXR Model CPA-Series laser to carry out Laser Ablation/Ionization Mass Spectrometry in the quest to search for extraterrestrial life. Tulej Marek, Neubeck Anna, Ivarsson Magnus, Riedo Andreas, Neuland Maike B., Meyer Stefan, and Wurz Peter. Astrobiology. August 2015, 15(8): 669-682. https://doi.org/10.1089/ast.2015.1304 ABSTRACT Detection of extraterrestrial life is an ongoing goal in space exploration, and there is a need for advanced instruments and methods for the detection of signatures of life based on chemical and isotopic composition. Here, we present the first investigation of chemical composition of putative [...]