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30 August 2019 Probing the orbital angular momentum spectrum of complex incoherent mixtures
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Abstract
Spatially incoherent light can result from nonlinear processes where a group of photons are emitted in entangled states of spatial modes, which results in an incoherent mixture of constituting spatial modes when the photons are assessed one by one. In this paper we explore a method which uses a tilted lens to probe the orbital angular momentum (OAM) spectrum of such a mixture. We examine the general case where the photons are in mixtures of both different OAM and radial modes, resulting in a 2-dimensional random distribution that creates a more difficult challenge compared to mixtures of OAM only.
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Yoko Miyamoto and Gangi Reddy Salla "Probing the orbital angular momentum spectrum of complex incoherent mixtures", Proc. SPIE 11099, Light in Nature VII, 1109905 (30 August 2019); https://doi.org/10.1117/12.2529257
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