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Ionization of noble gases by strong infrared circularly-polarized laser pulses can produce electron currents with a controllable degree of spin polarization [1-4]. Spin polarization arises as a consequence of (1) entanglement between the liberated electron and the parent ion, and (2) sensitivity of ionization to the sense of electron rotation in the initial state. In this context, the use of two-color...
Complete characterization of attosecond pulses with arbitrary ellipticity and possibly partial polarization is now particularly acute. State-of-the-art experimental setups have provided robust and practical means to generate high harmonics in the XUV and soft-X-ray range with controlled polarization [1]. This opens the way to generate isolated attosecond pulses and attosecond pulse trains with controlled...
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