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Nonlinear conversion of photon spin to photon orbital angular momentum

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Abstract

A relativistically intense, ultrashort laser pulse with purely spin angular momentum produces second-harmonic radiation with equal parts of both spin and orbital angular momentum when focused into a plasma. The orbital contribution is due to an azimuthal phase variation that arises in the nonlinear current density. This phase variation is associated with the radial nonuniformity driven by ponderomotive blowout.

© 2009 Optical Society of America

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Supplementary Material (2)

Media 1: MOV (1243 KB)     
Media 2: MOV (26753 KB)     

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Equations (8)

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