Optical vortices produced with a nonspiral phase plate.
We present simple methods to produce optical vortices on the axis of beam propagation with nonspiral phase plates. We show that a phase plate that provides linear phase retardation on one half of a laser beam produces optical vortices, which is demonstrated experimentally by use of a thickness-varying glass platelet. We also demonstrate and explain that mixed dislocations of a bent edge dislocation transform into a pair of vortices with opposing topological charges.
Kim
G H
GH
Jeon
J H
JH
Ko
K H
KH
Moon
H J
HJ
Lee
J H
JH
Chang
J S
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