A5052515331- Laser-Plasma Interactions and Diagnostics
- Atomic and Molecular Physics
- Laser-Matter Interactions and Applications
- Laser Design and Applications
- Advanced Optical Sensing Technologies
- Particle Accelerators and Free-Electron Lasers
- Laser-induced spectroscopy and plasma
- Advanced Fiber Laser Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Particle accelerators and beam dynamics
- Advanced Frequency and Time Standards
- Magnetic confinement fusion research
- Biofield Effects and Biophysics
- Relativity and Gravitational Theory
- Quantum optics and atomic interactions
- Inorganic Chemistry and Materials
- Gas Dynamics and Kinetic Theory
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Advanced Chemical Physics Studies
- Quantum Mechanics and Applications
- Orbital Angular Momentum in Optics
- Geophysics and Sensor Technology
- Molecular Junctions and Nanostructures
University of Maryland, College Park
2019-2024
Joint Quantum Institute
2019-2024
Center for Physical Sciences and Technology
2019-2020
Nanyang Normal University
2018
About 50 years ago, Sarachick and Schappert [Phys. Rev. D. 1, 2738 (1970)] showed that relativistic Thomson scattering leads to wavelength shifts are proportional the laser intensity. 28 later Chen et al. [Nature 396, 653 (1998)] used these estimate their intensity near 10^18 W/cm^2. More recently there have been several theoretical studies aimed at exploiting nonlinear as a tool for direct measurement of intensities well into regime. We present first quantitative study this approach between...
We present a technique to assess the focal volume of petawatt-class lasers at full power. Our approach exploits quantitative measurement angular distribution electrons born in focus via ionization rarefied gas, which are accelerated forward and ejected ponderomotively by field. show that bivariate (θ,ϕ) distribution, was obtained with image plates, not only enables peak intensity be extracted, but also reflects nonideality focal-spot distribution. In our prototype demonstration intensities...
Spatial distributions of electrons ionized and scattered from ultra-low-pressure gases are proposed experimentally demonstrated as a method to directly measure the intensity an ultra-high-intensity laser pulse. Analytic models relating peak electron energy derived compared paraxial Runge–Kutta simulations highlighting two suitable for describing weakly beams (f#>5) intensities in range 1018−1021 W cm−2. Scattering energies shown be dependent on gas species, emphasizing need specific...
Abstract In this paper we will show that photon–photon collision experiments using extreme lasers can provide measurable effects giving fundamental information about the essence of QED, its Lagrangian. A possible scenario with two counterpropagating ultra-intense for an experiment to detect scattering between optical photons is analyzed. We discuss importance pulse widths and waists, best overlapping beams signal detection, as well ways distinguish from noise. This would need a...
We present a novel technique to assess the focal volume of petawatt-class lasers at full power. Our approach exploits quantitative measurement angular distribution electrons born in focus via ionization rarefied gas, which are accelerated forward and ejected ponderomotively by field. show that bivariate ($\theta, \phi$) distribution, was obtained with image plates, not only enables peak intensity be extracted, but also reflects nonideality focal-spot distribution. In our prototype...
Spatial distributions of electrons ionized and scattered from ultra-low pressure gases are proposed experimentally demonstrated as a method to directly measure the intensity an ultra-high laser pulse. Analytic models relating peak electron energy derived compared paraxial Runge-Kutta simulations highlighting two suitable for describing weakly beams ($f_{\#}>5$) intensities in range $10^{18}-10^{21}$Wcm$^{-2}$. Scattering energies shown be dependant on gas species emphasizing need specific...
Nearly 50 years ago Sarachik and Schappert suggested an intensity gauge based on wavelength shifts due to relativistic Thomson scattering. We present the first preliminary experimental results exploiting these make a direct measurement of peak intensities above 1018 W/cm2. © 2019 The Author(s)
A technique to measure the intensity profile of a focused laser pulse at full power is long-standing desire. High lasers allow experiments relativistic intensities (1018 W/cm2 and beyond). At those photon densities all atoms are ionized therefore it very difficult directly peak or 3D-profile focal spot intensity. We would like present way it, based on residual in experimental chamber. low-density gas will imply number volume. Those be instantaneously ionized, released electrons move speeds...
A new tool for characterizing relativistic Thomson scattering intensities above 10 18 W/cm 2 will be presented.
The prospects - what can be learned, conditions are required and tools needed for precision measurements of the quantum vacuum at intensities 10 25 W/cm 2 above will discussed.
Elements of an in situ gauge exploiting relativistic Thomson scattering for measuring intensities from 10 18 to 25 W/cm 2 and expelling electrons protons the focal volume will be presented.