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Creators/Authors contains: "Dollar, F"

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  1. High intensity, laser solid interactions are capable of generating attosecond light bursts via high harmonic generation, most work focuses on single beam interactions. In this study, we perform a numerical investigation on the role of wavelength and polarization in relativistic, high harmonic generation from normal-incidence, two-beam interactions off plasma mirrors. We find that the two-beam harmonic generation mechanism is a robust process described by a set of well-defined selection rules. We demonstrate that the emitted harmonics from normal incidence interactions exhibit an intensity optimization when the incident fields are of equal intensity for two-color circularly-polarized fields. 
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  2. Intense few-cycle laser pulses have a breadth of applications in high energy density science, including particle acceleration and x-ray generation. Multi-amplifier laser system pulses have durations of tens of femtoseconds or longer. To achieve high intensities at the single-cycle limit, a robust and efficient post-compression scheme is required. We demonstrate a staged compression technique using self-phase modulation in thin dielectric media, in which few-cycle pulses can be produced. The few-cycle pulse is then used to generate extreme ultravoilet light via high harmonic generation at strong field intensities and to generate MeV electron beams via laser solid interactions at relativistic intensities. 
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  3. Generation of an extreme ultraviolet continuum (33 eV to 72 eV) by a multi- millijoule, few-cycle (7 fs) laser pulse produced by the Thin Film Compression technique. 
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