52 citations · 142 across the 10 of their papers we have counts for
10 papers
Beating Optical Turbulence Limits Using High Peak-Power Lasers
Michael H. Helle, Gregory Dicomo, Samantha Gregory +6
We experimentally demonstrate the ability of a nonlinear self-channeling beam to resist turbulence-induced spreading and scintillation. Spatio-temporal data is presented for an 850…
Lensing properties of rotational gas flow
D. Kaganovich, L. A. Johnson, D. F. Gordon +2
A negative lens comprised of a gas in steady axisymmetric flow is demonstrated experimentally and analyzed. The lens has potential applications in high-intensity laser optics and p…
Nonlinear Frequency Shift in Raman Backscattering and its Implications for Plasma Diagnostics
D. Kaganovich, B. Hafizi, J. P. Palastro +5
Raman backscattered radiation of intense laser pulses in plasma is investigated for a wide range of intensities relevant to laser wakefield acceleration. The weakly nonlinear dispe…
Synchrotron radiation from a curved plasma channel laser wakefield accelerator
J. P. Palastro, D. Kaganovich, B. Hafizi +5
A laser pulse guided in a curved plasma channel can excite wakefields that steer electrons along an arched trajectory. As the electrons are accelerated along the curved channel, th…
Laser Accelerated Ions from a Shock Compressed Gas Foil
M. H. Helle, D. F. Gordon, D. Kaganovich +3
We present results of energetic laser-ion acceleration from a tailored, near solid density gas target. Colliding hydrodynamic shocks compress a pure hydrogen gas jet into a 70 μm t…
Plasma lenses for ultrashort multi-petawatt laser pulses
J. P. Palastro, D. Gordon, B. Hafizi +5
An ideal plasma lens can provide the focusing power of a small f-number, solid-state focusing optic at a fraction of the diameter. An ideal plasma lens, however, relies on a steady…
Accelerated Ions from a Laser Driven Z-pinch
Michael H. Helle, Daniel F. Gordon, Dmitri Kaganovich +3
Intense laser acceleration of ions is inherently difficult due to the velocity mismatch between laser pulses moving at the speed of light and slowly moving massive ions. Instead of…
Enhanced betatron X-rays from axially modulated plasma wakefields
J. P. Palastro, D. Kaganovich, D. Gordon
In the cavitation regime of plasma-based accelerators, a population of high-energy electrons tailing the driver can undergo betatron motion. The motion results in X-ray emission, b…
Stimulated Raman Scattering and Nonlinear Focusing of High-Power Laser Beams Propagating in Water
B. Hafizi, J. P. Palastro, J. R. Penano +4
The physical processes associated with propagation of a high-power (power > critical power for self-focusing) laser beam in water include nonlinear focusing, stimulated Raman scatt…
A nonlinear plasma retroreflector for single pulse Compton backscattering
J. P. Palastro, D. Kaganovich, D. Gordon +4
Compton scattered x-rays can be generated using a configuration consisting of a single, ultra-intense laser pulse, and a shaped gas target. The gas target incorporates a hydrodynam…