Local observations of phase singularities in optical fields in waveguide structures

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Balistreri, M.L.M. and Korterik, J.P. and Kuipers, L. and Hulst van, N.F. (2000) Local observations of phase singularities in optical fields in waveguide structures. Physical Review Letters, 85 (2). pp. 294-297. ISSN 0031-9007

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Abstract:The phase evolution of light in an optical waveguide structure has for the first time been visualized with subwavelength resolution using a novel heterodyne interferometric photon scanning tunneling microscope. Phase singularities in the optical field of the waveguide have been observed. The phase singularities of charge o­ne appear at locations where the modal field amplitude vanishes, due to the interference of various modes in the waveguide. Excellent agreement of the data with calculations has been obtained.
Item Type:Article
Copyright:© 2000 The American Physical Society
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Link to this item:http://purl.utwente.nl/publications/23832
Official URL:http://dx.doi.org/10.1103/PhysRevLett.85.294
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Metis ID: 128631