16 February 2011 Measuring the orbital angular momentum of light
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Proceedings Volume 7950, Complex Light and Optical Forces V; 79500E (2011) https://doi.org/10.1117/12.876119
Event: SPIE OPTO, 2011, San Francisco, California, United States
We report a new simple optical system for the highly efficient measurement of the Orbital Angular Momentum States of Light. It uses an image reformatter to map each input state onto a different lateral position in the output aperture. This, near perfect, separation of states potentially makes available the high information capacity of OAM in both classical and quantum applications.
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Miles J. Padgett, Martin Lavery, Gregorius Berkhout, Johannes Courtial, Marco Beijersbergen, "Measuring the orbital angular momentum of light", Proc. SPIE 7950, Complex Light and Optical Forces V, 79500E (16 February 2011); doi: 10.1117/12.876119; https://doi.org/10.1117/12.876119

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