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14 March 2005 Measuring orbital angular momentum of light with a torsion pendulum
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Abstract
We report experiments aimed at measuring the orbital angular momentum of light by means of a torsion pendulum, in the spirit of the classical spin angular momentum experiment by Beth (1936) but using present-day technology. Although our set-up has adequate sensitivity and resolution to measure orbital angular momentum of light, the systematic errors that are caused by the inherent asymmetry in the conversion of orbital angular moment remain a problem.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marco W. Beijersbergen and J. P. Woerdman "Measuring orbital angular momentum of light with a torsion pendulum", Proc. SPIE 5736, Nanomanipulation with Light, (14 March 2005); https://doi.org/10.1117/12.584515
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