The production of monoenergetic electron beams by two copropagating ultrashort laser pulses is investigated both by experiment and using particle-in-cell simulations. By proper timing between guiding and driver pulses, a high-amplitude plasma wave is generated and sustained for longer than is possible with either of the laser pulses individually, due to plasma waveguiding of the driver by the guiding pulse. The growth of the plasma wave is inferred by the measurement of monoenergetic electron beams with low divergence that are not measured by using either of the pulses individually. This scheme can be easily implemented and may allow more control of the interaction than is available to the single pulse scheme.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.100.255002 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Superhydrophobic Luminescent Pixel Array Based on Perovskite Quantum Dots for Outdoor Displays.
Nano Lett
January 2025
School of Physics, Nanjing University of Science &Technology, Nanjing 210094, China.
Perovskite quantum dots (PQDs) have garnered significant attention in the display industry as high-performance luminescent materials in recent years. However, in outdoor applications, it is highly challenging to maintain the luminescent performance of PQDs while simultaneously ensuring superhydrophobicity and self-cleaning functionality in rainy weather conditions. Here, we report a luminescent pixel array fabricated using superhydrophobic PQDs with a photoluminescence quantum yield (PLQY) of 32%.
View Article and Find Full Text PDFLaser surface nanoalloying of Fe, Si, and C on aluminum substrates with excellent optical and electronic properties.
Nanoscale Adv
January 2025
Energy Masteries Laboratory, Physics Department, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
Laser surface alloying of Fe, Si, and C on aluminium is demonstrated using a Q-switched Nd:YAG laser as the source of energy. The fundamental wavelength of the laser beam was 1064 nm with an output energy of 100 mJ and a pulse duration of 10 ns. The exposure was conducted in repetitive mode with a frequency rate of 1 Hz.
View Article and Find Full Text PDFImplementation of multiple soliton state fiber laser using a promising saturable absorber of silver indium phosphorus sulfide.
iScience
January 2025
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Based on the nonlinear broadband saturation absorption, ultrafast carrier recovery rate, and ultrashort recovery time of new low dimensional materials, ultrafast photonics has rapidly developed as an interdisciplinary field. We have demonstrated multiple solitons state output in an erbium-doped fiber laser based on saturable absorption characteristic of AgInPS. By preparing AgInPS with a modulation depth of 10.
View Article and Find Full Text PDFIn situ quantification of fungicide residue on wheat leaf surfaces using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry imaging technology.
Food Chem X
January 2025
State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
To overcome the time-consuming off-site limitations in conventional pesticide detection, this contribution presents an in situ quantitative analysis detection strategy for pesticides on leaf surfaces using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry imaging technology. Taking fungicide metrafenone as a representative, we initially screened seven commonly used matrices, and identifying α-cyano-4-hydroxycinnamic acid as the most effective one in positive mode. Subsequently, coating the matrix using sublimation spraying method resulted in the highest mass intensity.
View Article and Find Full Text PDFGreen light-responsive photoelectrochemical sensing nanoplatform based on copper cobaltite nanorods for ultrasensitive detection of furazolidone antibiotic residue in food samples.
RSC Adv
January 2025
Phenikaa University Nano Institute (PHENA), PHENIKAA University Hanoi 12116 Vietnam
In this research, the preparation of copper cobaltite (CuCoO) nanorods and its potential application in photoelectrochemical sensing platform towards ultrasensitive detection of furazolidone are reported. X-ray diffraction, Raman spectra, scanning electron microscopy, and UV-visible spectroscopy have been performed to confirm the formation, morphology, phase composition, and optical properties of CuCoO synthesized by a microwave-assisted hydrothermal method. The electrochemical characteristic parameters were calculated electrochemical impedance spectroscopy, cyclic voltammetry, differential pulse voltammetry, and chronoamperometry techniques in the absence and presence of laser light irradiation.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!