Photoionization with Orbital Angular Momentum Beams

Details Photoionization with Orbital Angular Momentum Beams Photoionization with Orbital Angular Momentum Beams

2010-02-05

arxiv.org/abs/1002.1318v1

Opt. Express 18, 3660-3671 (2010)

Physics

Quantum Physics

Scientific paper

Intense laser ionization expands Einstein's photoelectric effect rules giving a wealth of phenomena widely studied over the last decades. In all cases, so far, photons were assumed to carry one unit of angular momentum. However it is now clear that photons can possess extra angular momentum, the orbital angular momentum (OAM), related to their spatial profile. We show a complete description of photoionization by OAM photons, including new selection rules involving more than one unit of angular momentum. We explore theoretically the interaction of a single electron atom located at the center of an intense ultraviolet beam bearing OAM, envisaging new scenarios for quantum optics.

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