Waves with helical wavefronts: wave characteristics within their vortices

Miroslav Miler

doi:10.1117/12.373621

29 December 1999 Waves with helical wavefronts: wave characteristics within their vortices

Miroslav Miler

Proceedings Volume 4016, Photonics, Devices, and Systems; (1999) https://doi.org/10.1117/12.373621
Event: Photonics Prague '99, 1999, Prague, Czech Republic

Abstract

Helical wavefronts can be created by transmission of coherent waves through spiral phase filters. This kind of wavefronts has in the center of a helicoid a singular point called an optical vortex in optics. According to the number m of transitions of the wavefronts through the plane perpendicular to the direction of propagation in the full angel 360 degrees C the vortex is called m-charged. A usual approach supposes for the final step an integer multiple of wavelengths which fits into the whole path difference. This contribution analyses the case when this proposition is not fulfilled and the final step is not an integer multiple of wavelength. The wave amplitude in the optical vortex is computed as an integral of phases of all nearest rays around the singular point.

Citation Download Citation

Miroslav Miler "Waves with helical wavefronts: wave characteristics within their vortices", Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999); https://doi.org/10.1117/12.373621

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