Journal
OPTICS EXPRESS
Volume 26, Issue 7, Pages 8709-8718Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.008709
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Funding
- Indian Institute of Technology (IIT) [IITK /PHY /20130008]
- Science and Engineering Research Board (SERB), Department of Science and Technology, Government of India [EMR/2015/001931]
- National Science Foundation, Directorate for Mathematical and Physical Sciences [1454931]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1454931] Funding Source: National Science Foundation
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We propose a single phase-only optical element that transforms different orbital angular momentum (OAM) modes into localized spots at separated angular positions on a transverse plane. We refer to this element as an angular lens since it separates out OAM modes in a manner analogous to how a converging lens separates out transverse wave-vector modes at the focal plane. We also simulate the proposed angular lens using a spatial light modulator and experimentally demonstrate its working. Our work can have important implications for OAM-based classical and quantum communication applications. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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