Unveiling a truncated optical lattice associated with a triangular aperture using light's orbital angular momentum.
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.
Hickmann
J M
JM
Optics and Materials Group-Optma, Universidade Federal de Alagoas, Caixa Postal 2051, 57061-970, Maceió, AL, Brazil. jmh@optma.org
Fonseca
E J S
EJ
Soares
W C
WC
Chávez-Cerda
S
S