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- W2005581689 abstract "We describe a simple method for creating Laguerre–Gauss (LG) optical vortex beams from Hermite–Gauss (HG) modes with a single cylinder lens. The diverging vortex created by the cylinder lens has the correct intensity distribution in the far-field but its residual longitudinal astigmatism causes the vortex to revert to the original HG mode when it is brought to a focus. We show that an appropriate small tilt of the focusing lens can prevent this effect by introducing a compensating astigmatism. The corrected vortex is a good approximation to an exact LG mode and should be useful for a variety of demonstrations and experiments." @default.
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- W2005581689 date "2011-04-28" @default.
- W2005581689 modified "2023-10-16" @default.
- W2005581689 title "A simple method for creating a robust optical vortex beam with a single cylinder lens" @default.
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- W2005581689 doi "https://doi.org/10.1088/2040-8978/13/6/064026" @default.
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