Results 11 to 20 of about 1,371,376 (301)

Experimental coder/decoder of dicode pulse position modulation. [PDF]

, 2009
Dicode Pulse Position Modulation has been proposed as an alternative coding scheme which has many advantages over previous Pulse Position Modulation formats.
Charitopoulos, Romanos, Sibley, Martin J.N.   +1 more
core   +4 more sources

Chirped pulse Raman amplification in plasma [PDF]

, 2011
Raman amplification in plasma has been proposed to be a promising method of amplifying short radiation pulses. Here, we investigate chirped pulse Raman amplification (CPRA) where the pump pulse is chirped and leads to spatiotemporal distributed gain ...
J P Farmer, Ersfeld, Bernhard, Raj, Gaurav, R C Issac, S M Wiggins, Brunetti, Enrico, Lyachev, Andrey, Issac, Riju, Welsh, Gregor H., Wiggins, Mark, Vieux, Gregory, A Lyachev, Farmer, John Patrick, Jaroszynski, Dino, G H Welsh, D A Jaroszynski, Yang, Xue, B Ersfeld, E Brunetti, G Raj, G Vieux, X Yang   +21 more
core   +3 more sources

Parabolic pulse generation through passive reshaping of Gaussian pulses in a normally dispersive fiber [PDF]

, 2007
We numerically and experimentally demonstrate that a Gaussian pulse can be reshaped into a pulse with a stable parabolic intensity profile during propagation in normally dispersive nonlinear ...
David J. Richardson, Periklis Petropoulos, Christophe Finot, Petropoulos, Periklis, Lionel Provost, Petropoulos, P., Richardson, D.J, Provost, Lionel, Richardson, David J., Finot, Christophe   +9 more
core   +2 more sources

Rehybridization dynamics into the pericyclic minimum of an electrocyclic reaction imaged in real-time

Nature Communications, 2023
Electrocyclic reactions are characterized by the concerted formation and cleavage of both σ and π bonds through a cyclic structure. This structure is known as a pericyclic transition state for thermal reactions and a pericyclic minimum in the excited ...
Y. Liu, D. M. Sanchez, M. R. Ware, E. G. Champenois, J. Yang, J. P. F. Nunes, A. Attar, M. Centurion, J. P. Cryan, R. Forbes, K. Hegazy, M. C. Hoffmann, F. Ji, M.-F. Lin, D. Luo, S. K. Saha, X. Shen, X. J. Wang, T. J. Martínez, T. J. A. Wolf   +19 more
doaj   +1 more source

Optical inter-site spin transfer probed by energy and spin-resolved transient absorption spectroscopy

Nature Communications, 2020
Optically driven spin transfer is the fastest process to manipulate magnetism. Here, the authors show that this process emerges as the dominant mechanism in femtosecond spin dynamics enabling to the engineering of functional magnetic systems for future ...
Felix Willems, Clemens von Korff Schmising, Christian Strüber, Daniel Schick, Dieter W. Engel, J. K. Dewhurst, Peter Elliott, Sangeeta Sharma, Stefan Eisebitt   +8 more
doaj   +1 more source

High average power, high energy, femto-second fiber chirped pulse amplification system [PDF]

, 2007
We have demonstrated an Yb-fiber laser system incorporating a CFBG stretcher, bandwidth optimised amplifiers and dielectric grating compressor. The system produced 135 W average power with pulse energy of 13.5 µJ.
M. Ibsen, Dawson, J.W., Ibsen, M., Piper, A., Richardson, D.J., Malinowski, A., C. P. J. Barty, A. Piper, C. W. Siders, J. A. Britten, Siders, C.W., Barty, C.P.J., J. W. Dawson, Price, J.H.V., J. H. V. Price, D. J. Richardson, He, F., F. He, A. Malinowski, Britten, J.A.   +19 more
core   +2 more sources

Generation of 22-mJ, 2.0-ps Pulses from a 1-kHz Ho:YLF Regenerative Chirped Pulse Amplifier [PDF]

EPJ Web of Conferences
We report a CW-pumped Ho:YLF regenerative amplifier (RA) delivering pulses with 22.5-mJ energy and 2.0-ps duration at 1 kHz. The RA emitting at 2051 nm is broadband-seeded and implemented in a chirped pulse amplification system. © 2024 The Author(s)
Bock Martin, von Grafenstein Lorenz, Mero Mark, Nagy Tamas, Griebner Uwe   +4 more
doaj   +1 more source

Chirped pulse Raman amplification in plasma: high gain measurements [PDF]

, 2009
High power short pulse lasers are usually based on chirped pulse amplification (CPA), where a frequency chirped and temporarily stretched ``seed'' pulse is amplified by a broad-bandwidth solid state medium, which is usually pumped by a monochromatic ...
Yang, X., Vieux, G., Wiggins, Samuel, Lyachev, A., Ersfeld, B., Raj, G., Jaroszynski, D. A., Brunetti, E., Issac, R., Farmer, J.   +9 more
core   +3 more sources

Pharmacomechanical Thrombectomy for Acute Limb Threatening Lower Extremity Arterial Thrombosis Secondary to COVID-19

Journal of Clinical Interventional Radiology ISVIR, 2022
Purpose The aim of this study was to report the clinical effectiveness and safety of pharmacomechanical thrombectomy (PMT) for acute limb threatening lower extremity arterial thrombosis secondary to coronavirus disease 2019 (COVID-19). Methods 
Rajesh Girdhardas Mundhada, Atul Dharmaraj Rewatkar, Anju Rajesh Mundhada, Aishwarya Atul Rewatkar, Nikita Navin Chandak   +4 more
doaj   +1 more source

Plasma Methods of Obtainment of Multifunctional Composite Materials, Dispersion-Hardened by Nanoparticles

High Temperature Materials and Processes, 2017
High voltage electric discharge (HVED) in disperse system “hydrocarbon liquid – powder” due to impact of plasma discharge channel, electromagnetic fields, shock waves mechanical impact, hydro flows and volume microcavitation leads to synthesis of ...
Sizonenko O. N., Grigoryev E. G., Pristash N. S., Zaichenko A. D., Torpakov A. S., Lypian Ye. V., Tregub V. A., Zholnin A. G., Yudin A. V., Kovalenko A. A.   +9 more
doaj   +1 more source