Evolution of emergent C-points, L-lines, and C-lines in free space

doi:10.1088/1674-1056/21/5/054202

Abstract Polarization singularities, which emerge from the incoherent superposition of two vector electric fields with the same frequency, and their evolution in free space are studied analytically and illustrated by numerical examples. It is shown that there exist C-points, L-lines, in particular, C-lines in incoherently superimposed two-dimensional wavefields. Usually, the C-lines are unstable and disappear during the free-space propagation. The motion, pair creation--annihilation process of the emergent C-points, as well as the distortion of the L-lines may take place, and the degree of polarization of the emergent C-points varies upon propagation and may be less than 1.

Keywords: vector singular optics emergent C-points L-lines and C-lines incoherent superposition degree of polarization

Received: 20 May 2011
Revised: 27 April 2012
Accepted manuscript online:

PACS:	42.25.Bs	(Wave propagation, transmission and absorption)
	42.25.Fx	(Diffraction and scattering)
	42.25.Ja	(Polarization)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10874125).

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Yan Hong-Wei(闫红卫), He De(何德), and Lü Bai-Da(吕百达) Evolution of emergent C-points, L-lines, and C-lines in free space 2012 Chin. Phys. B 21 054202

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Evolution of emergent C-points, L-lines, and C-lines in free space

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