Naidoo, DarrylAït-Ameur, KBrunel, MForbes, A2012-11-212012-11-212012Naidoo, D, Aït-Ameur, K, Brunel, M, and Forbes, A. 2012. Intra-cavity generation of superpositions of Laguerre-Gaussian beams. Applied Physics B: Lasers and Optics, Vol. 106(3), pp 683-6900946-2171http://link.springer.com/article/10.1007%2Fs00340-011-4775-x?LI=true#page-1http://link.springer.com/article/10.1007/s00340-011-4775-x?null#page-1http://hdl.handle.net/10204/6344Copyright: 2011 Springer Verlag. This is the ABSTRACT ONLY. The definitive version is published in Applied Physics B: Lasers and Optics, Vol. 106(3), pp 683-690In this paper we demonstrate experimentally the intra-cavity generation of a coherent superposition of Laguerre–Gaussian modes of zero radial order but opposite azimuthal order. The superposition is created with a simple intra-cavity stop that creates equal losses for the two azimuthal modes, and we show that by adjustment of the stop we can produce modes up to azimuthal order 8. The fact that we have a coherent superposition rather than an incoherent superposition is verified by intensity measurements, propagation measurements and a decomposition of the field by an inner product executed on a phase-only spatial light modulator. Such fields have relevance in quantum information and optical trapping.enPhysicsLaguerre–Gaussian modesLaguerre–Gaussian beamsLasersArticleNaidoo, D., Aït-Ameur, K., Brunel, M., & Forbes, A. (2012). Intra-cavity generation of superpositions of Laguerre-Gaussian beams. http://hdl.handle.net/10204/6344Naidoo, Darryl, K Aït-Ameur, M Brunel, and A Forbes "Intra-cavity generation of superpositions of Laguerre-Gaussian beams." (2012) http://hdl.handle.net/10204/6344Naidoo D, Aït-Ameur K, Brunel M, Forbes A. Intra-cavity generation of superpositions of Laguerre-Gaussian beams. 2012; http://hdl.handle.net/10204/6344.TY - Article AU - Naidoo, Darryl AU - Aït-Ameur, K AU - Brunel, M AU - Forbes, A AB - In this paper we demonstrate experimentally the intra-cavity generation of a coherent superposition of Laguerre–Gaussian modes of zero radial order but opposite azimuthal order. The superposition is created with a simple intra-cavity stop that creates equal losses for the two azimuthal modes, and we show that by adjustment of the stop we can produce modes up to azimuthal order 8. The fact that we have a coherent superposition rather than an incoherent superposition is verified by intensity measurements, propagation measurements and a decomposition of the field by an inner product executed on a phase-only spatial light modulator. Such fields have relevance in quantum information and optical trapping. DA - 2012 DB - ResearchSpace DP - CSIR KW - Physics KW - Laguerre–Gaussian modes KW - Laguerre–Gaussian beams KW - Lasers LK - https://researchspace.csir.co.za PY - 2012 SM - 0946-2171 T1 - Intra-cavity generation of superpositions of Laguerre-Gaussian beams TI - Intra-cavity generation of superpositions of Laguerre-Gaussian beams UR - http://hdl.handle.net/10204/6344 ER -