Enforcing Energy Balance in Coherently Superimposed Optical Vortices

Jaime Cisternas*, Jaime A. Anguita, Gustavo Funes

*Autor correspondiente de este trabajo

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

The generation of optical beams with multiple, mutually coherent orbital-angular-momentum (OAM) modes using phase gratings is analyzed from the perspective of energy distribution and radial mode composition. We show that phase gratings designed with equally weighted Laguerre-Gauss (LG) modes will generate beams with uneven energy distribution among OAM components. This unwanted outcome cannot be corrected by adjusting the width of the illuminating beam. We propose a way to design phase gratings that will produce a uniform energy distribution among the constituent OAM states after illumination while minimizing the content of high radial modes. This method is based on a generalized definition for the LG modes that take advantage of the freedom to select their radial scales.
Idioma originalInglés
Número de artículo7901712
PublicaciónIEEE Photonics Journal
Volumen10
N.º2
DOI
EstadoPublicada - abr 2018

Nota bibliográfica

Publisher Copyright:
© 2009-2012 IEEE.

Palabras clave

  • coherent communications
  • Diffraction gratings
  • free-space optical communications
  • Optical vortices

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