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We exploited the Faraday effect to imprint polarization shifts on a transverse probe that captured the structure of a GeV laser-plasma accelerator. Our measurements suggested a plasma bubble diameter 50.8±10.1 μm.
We generate a collimated (<1mrad) beam of gamma rays that penetrate several centimeters of lead by retro-reflecting a petawatt laser pulse onto trailing ∼2 GeV electrons with a plasma mirror after driving a laser-plasma accelerator.
We visualize formation, propagation and collapse of laser-driven plasma bubbles using a single-shot frequency domain streak camera, thereby identifying bubble dynamics that optimize electron injection and acceleration.
We identify three regimes of correlated GeV-electron/keV-betatron-x-ray generation by a laser-plasma accelerator driven by the Texas Petawatt laser, and relate them to variations in strength of blowout, injection geometry and beam loading.
We report self-injected quasi-monoenergetic (5% spread FWHM) acceleration of electrons to 2.0 ± 0.1 GeV by 0.6 PW-laser-driven wakefield acceleration in pure He plasma of density 5×1017 cm−3. Electron bunches diverge ∼0.5mrad, and contain ∼60 pC.
We report electron acceleration to 1.25 GeV by petawatt-laser-driven wakefield acceleration at plasma density 5×1017 cm3. Electron beams are dark-current-free, quasi-monoenergetic, highly collimated (<1mrad divergence), contain tens of pC and have excellent pointing stability.
We demonstrated single-shot frequency-domain tomographic imaging of laser-produced refractive index structures that evolve during propagation, using multiple probe pulses multiplexed to a single spectrometer and tomographic reconstruction algorithms.
We report observation of electron self-injection and acceleration in a plasma accelerator driven by the Texas petawatt laser at 1017 cm−3 plasma density, an order of magnitude lower density than previous self-injected laser-plasma accelerators.
We report the extension of Frequency-Domain Holography to a Frequency-Domain Streak Camera capable of capturing the evolution of refractive index structures propagating at luminal speeds. Possibility of extension to Frequency-Domain Tomography is demonstrated.
We report recent ultrafast pump-probe experiments in He plasma waveguides using intense pump and weak, same wavelength, cross-polarized probe. These single probe FDI measurements reveal otherwise undetectable weak blueshift, and depolarized component of pump
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