Results 11 to 20 of about 1,185,745 (318)

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 ...
G. Raj, G. Vieux, A. Lyachev, Jaroszynski, D. A., Yang, X., B. Ersfeld, M. Wiggins, D. A. Jaroszynski, R. Issac, Vieux, G., Wiggins, Samuel, Lyachev, A., Ersfeld, B., Raj, G., E. Brunetti, J. Farmer, X. Yang, Brunetti, E., Issac, R., Farmer, J.   +19 more
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Nano-Pulse Stimulation is a physical modality that can trigger immunogenic tumor cell death

Journal for ImmunoTherapy of Cancer, 2017
Background We have been developing a non-thermal, drug-free tumor therapy called Nano-Pulse Stimulation (NPS) that delivers ultrashort electric pulses to tumor cells which eliminates the tumor and inhibits secondary tumor growth. We hypothesized that the
Richard Nuccitelli, Amanda McDaniel, Snjezana Anand, John Cha, Zachary Mallon, Jon Casey Berridge, Darrin Uecker   +6 more
doaj   +1 more source

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

Pulse pedestal suppression using four-wave mixing in an SOA [PDF]

, 2008
Experimental results are presented demonstrating how four-wave mixing in a semiconductor optical amplifier can be used to remove pulse pedestals introduced due to nonlinearities which occur upon pulse propagation in an optical system.
Reid, Douglas A., Barry, Liam P., Bondarczuk, Krzysztof, Kennedy, Brendan F.   +3 more
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A Fully Differential Digital CMOS Pulse UWB Generator [PDF]

, 2009
A new fully-digital CMOS pulse generator for impulse-radio Ultra-Wide-Band (UWB) systems is presented. First, the shape of the pulse which best fits the FCC regulation in the 3.1-5 GHz sub-band of the entire 3.1-10.6 GHz UWB bandwidth is derived and ...
Graziano, Mariagrazia, Casu, Mario Roberto, Zamboni, Maurizio   +2 more
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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

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

All-optical 160 Gbit/s retiming system using fiber grating based pulse shaping technology [PDF]

, 2009
This paper demonstrates a retiming system operating at rates of 40 and 160 Gbit/s, which incorporates a superstructured fiber Bragg grating (SSFBG) as a pulse shaping element.
Galili, Michael, Ibsen, M., Petropoulos, P., Ibsen, Morten, Richardson, D.J., Richardson, David J., Zibar, Darko, Parmigiani, Francesca, Clausen, Anders, Petropoulos, Periklis, Oxenløwe, Leif Katsuo, Parmigiani, F., Clausen, Anders Thomas, Jeppesen, Palle   +13 more
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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
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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   +1 more source