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Single-shot measurement of the orbital-angular-momentum spectrum of light

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Abstract

We propose a single-shot scheme to measure the orbital-angular-momentum (OAM) spectrum of a partially coherent field. We first test the scheme for a known field, and then use it to measure the OAM spectrum of the signal-idler field from parametric down-conversion with Schmidt number K = 82:1.

© 2018 The Author(s)

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