Degeneracy in the Fraunhofer diffraction of truncated Gaussian beams

1987 ◽  
Vol 4 (7) ◽  
pp. 1237 ◽  
Author(s):  
Yajun Li
Keyword(s):  
Gaussian Beams ◽  
Fraunhofer Diffraction ◽  
Truncated Gaussian

Focusing of truncated Gaussian beams

2003 ◽  
Vol 222 (1-6) ◽  
pp. 51-68 ◽  
Author(s):  
Zoltán L Horváth ◽  
Zsolt Bor
Keyword(s):  
Gaussian Beams ◽  
Truncated Gaussian

Laser recording with truncated Gaussian beams

1979 ◽  
Vol 18 (13) ◽  
pp. 2143 ◽  
Author(s):  
H. M. Haskal
Keyword(s):  
Gaussian Beams ◽  
Truncated Gaussian

scholarly journals Fresnel and Fraunhofer diffraction of a Gaussian beam with several polarization singularities

2018 ◽  
Vol 42 (2) ◽  
pp. 179-189 ◽  
Author(s):  
A. A. Kovalev ◽  
V. V. Kotlyar
Keyword(s):  
Regular Polygon ◽  
Transverse Plane ◽  
Gaussian Beams ◽  
Optical Vortices ◽  
Far Field ◽  
Radial Polarization ◽  
Fraunhofer Diffraction ◽  
Initial Plane ◽  
Phase Singularities ◽  
Analytic Expression

Alongside phase singularities (optical vortices), there may be light fields with polarization singularities (PS), i.e. isolated intensity nulls with radial, azimuthal, or radial-azimuthal polarization around them. Here, we study Gaussian beams with several arbitrarily located PS. An analytic expression is obtained for their complex amplitude. A partial case is studied when the PS are at the vertices of a regular polygon. If the beam has one or two PS, then these are points with radial polarization. If there are four PS, then two of the points will have azimuthal polarization. It is shown that while propagating in free space, the PS can appear only in a discrete set of planes, in contrast to the phase singularities, which exist in any transverse plane. In the case of two PS, it is shown that their polarization transforms from radial in the initial plane to azimuthal in the far field.

Analysis of the caustics of partially coherently combined truncated Gaussian beams

2020 ◽  
Vol 59 (11) ◽  
pp. 3340
Author(s):  
Jan K. Jabczynski ◽  
Przemyslaw Gontar
Keyword(s):  
Gaussian Beams ◽  
Truncated Gaussian
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