Three-dimensional representation of two-dimensional vortex dynamics in lasers

We observe that the dynamics of vortices in paraxial optics, including vortex pair-creation and pair-annihilation, can be represented in a simplified manner by the motion of a locus obtained from the complex optical field, for which the real and imaginary parts of the field are equal. When the locus...

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Bibliographic Details
Published in:Optics communications 1996-07, Vol.128 (1), p.123-135
Main Authors: Malos, J.T., Staliunas, K., Vaupel, M., Weiss, C.O.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Image reconstruction
tomography
Imaging and optical processing
Optics
Physics
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Summary:We observe that the dynamics of vortices in paraxial optics, including vortex pair-creation and pair-annihilation, can be represented in a simplified manner by the motion of a locus obtained from the complex optical field, for which the real and imaginary parts of the field are equal. When the locus lies within the transverse plane a dark line is present in the optical field with a phase change of π across. When the locus intersects the transverse plane, a vortex exists at the intersection point. Thus the locus line appears like a three-dimensional vortex line. Examples are given ranging from emission in low order laser mode families to patterns calculated for plane mirror resonators.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(96)00140-X