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- Phillip Sprangle, A. Ting, J. R. PeÃ±ano, R. Fischer, B. Hafizi
- IEEE Journal of Quantum Electronics
- 2009

High-power fiber lasers can be incoherently combined to form the basis of a directed high-energy laser system which is highly efficient, compact, robust, low-maintenance and has a long operatingâ€¦ (More)

- Phillip Sprangle, J. R. PeÃ±ano, B. Hafizi
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2002

The propagation of short, intense laser pulses in the atmosphere is investigated theoretically and numerically. A set of three-dimensional (3D), nonlinear propagation equations is derived, whichâ€¦ (More)

- J. R. PeÃ±ano, Phillip Sprangle, B. Hafizi, Wallace Manheimer, Arie Zigler
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2005

The interaction of intense, femtosecond laser pulses with a dielectric medium is examined using a numerical simulation. The simulation uses the one-dimensional electromagnetic wave equation to modelâ€¦ (More)

- D. F. Gordon, R. F. Hubbard, Jason Cooley, B. Hafizi, Antonio C. Ting, Phillip Sprangle
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2005

A high-quality electron beam can be extracted from a channel guided laser wakefield accelerator without confining the injected particles to a small region of phase. By careful choice of the injectionâ€¦ (More)

- Phillip Sprangle, B. Hafizi, J. R. PeÃ±ano
- IEEE Journal of Quantum Electronics
- 2004

A conceptual design for a compact megawatt class free-electron laser (FEL) operating at 1 /spl mu/m is presented. The proposed FEL consists of an optically guided, pinched amplifier configurationâ€¦ (More)

- I N Alexeev, Antonio C. Ting, D. F. Gordon, E. J. Briscoe, B. Hafizi, Phillip Sprangle
- Optics letters
- 2005

We perform laboratory experiments to study ultraviolet radiation generated by intense self-formed laser filaments produced by propagating high-power femtosecond laser pulses in air. The laser used inâ€¦ (More)

- J. R. PeÃ±ano, Phillip Sprangle, Paula O Serafim, B. Hafizi, Antonio C. Ting
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2003

Stimulated rotational Raman scattering (SRRS) is known to be one of the processes limiting the propagation of high-power laser beams in the atmosphere. In this paper, SRRS, Kerr nonlinearity effects,â€¦ (More)

- Phillip Sprangle, J. R. PeÃ±ano, B. Hafizi, C A Kapetanakos
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2004

Intense, ultrashort laser pulses propagating in the atmosphere have been observed to emit sub-THz electromagnetic pulses (EMPS). The purpose of this paper is to analyze EMP generation from theâ€¦ (More)

- J. R. PeÃ±ano, Phillip Sprangle, B. Hafizi, Daniel I. Gordon, Philip Serafim
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2010

We analyze the generation of terahertz radiation when an intense, short laser pulse is mixed with its frequency-doubled counterpart in plasma. The nonlinear coupling of the fundamental and theâ€¦ (More)

- I C Edmund Turcu, F. Negoita, +45 authors Nicolae Victor Zamfir
- 2016

ELI-NP facility will enable for the first time the use of two 10 PW laser beams for quantum electrodynamics (QED) experiments. The first beam will accelerate electrons to relativistic energies. Theâ€¦ (More)