Phys. Rev. Lett. 105, 053904 (2010) [4 pages]Unveiling a Truncated Optical Lattice Associated with a Triangular Aperture Using Light’s Orbital Angular Momentum
See accompanying Physics Focus We show that the orbital angular momentum can be used to unveil lattice properties hidden in diffraction patterns of a simple triangular aperture. Depending on the orbital angular momentum of the incident beam, the far field diffraction pattern reveals a truncated optical lattice associated with the illuminated aperture. This effect can be used to measure the topological charge of light beams. © 2010 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.105.053904
DOI:
10.1103/PhysRevLett.105.053904
PACS:
42.25.Fx, 42.50.Tx
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