PHYSICS: Attosecond Streak Camera

Calibration of electron spectrometer resolution in attosecond streak camera.

We report a new method for determining the energy resolution of time-of-flight spectrometers for detecting photoelectrons produced with attosecond XUV pulses. By measuring the width of the 2s2p autoionization line of helium, we found the resolution of our spectrometer to be approximately 0.6 eV for electrons at 35.5 eV. Furthermore, the resolution in the 10 to 35 eV range was determined by appl...

Relativistic attosecond physics

A study, with particle-in-cell simulations, of relativistic nonlinear optics in the regime of tight focus and ultrashort pulse duration sthe l3 regimed reveals that synchronized attosecond electromagnetic pulses fN. M. Naumova, J. A. Nees, I. V. Sokolov, B. Hou, and G. A. Mourou, Phys. Rev. Lett. 92, 063902 s2004dg and attosecond electron bunches fN. Naumova, I. Sokolov, J. Nees, A. Maksimchuk,...

Modeling Streak Camera Sweep Speeds

On the OMEGA laser system at the University of Rochester's Laboratory for Laser Energetics (LLE), six P5 10 streak cameras measure the pulse shape of the 60 OMEGA beam lines. These cameras use a photocathode to convert an optical signal into an electron beam. A voltage ramp then sweeps this electron beam across a phosphor screen which is in turn imaged by a CCD. Currently, 120 images of an eigh...

EDITORIAL: Focus on Attosecond Physics

Streak Camera for Strong-Field Ionization.

Ionization of an atom or molecule by a strong laser field produces suboptical cycle wave packets whose control has given rise to attosecond science. The final states of the wave packets depend on ionization and deflection by the laser field, which are convoluted in conventional experiments. Here, we demonstrate a technique enabling efficient electron deflection, separate from the field driving ...