Enforcing Energy Balance in Coherently Superimposed Optical Vortices
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) mo...
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8304626/ |
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| author | Jaime Cisternas Jaime A. Anguita Gustavo Funes |
| author_facet | Jaime Cisternas Jaime A. Anguita Gustavo Funes |
| author_sort | Jaime Cisternas |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-65b80e04ccba4c1d83f3e6b51fb6a835 |
| institution | Matheson Library |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-65b80e04ccba4c1d83f3e6b51fb6a8352025-07-01T23:37:43ZengIEEEIEEE Photonics Journal1943-06552018-01-0110211210.1109/JPHOT.2018.28104468304626Enforcing Energy Balance in Coherently Superimposed Optical VorticesJaime Cisternas0https://orcid.org/0000-0002-2955-1821Jaime A. Anguita1Gustavo Funes2Facultad de Ingeniería y Ciencias Aplicadas, Universidad de Los Andes, Santiago, ChileMillennium Institute for Research in Optics, Santiago, ChileFac. de Ing. y Cienc. Aplic., Univ. de Los Andes, Santiago, ChileThe 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.https://ieeexplore.ieee.org/document/8304626/Diffraction gratingsoptical vorticescoherent communicationsfree-space optical communications. |
| spellingShingle | Jaime Cisternas Jaime A. Anguita Gustavo Funes Enforcing Energy Balance in Coherently Superimposed Optical Vortices IEEE Photonics Journal Diffraction gratings optical vortices coherent communications free-space optical communications. |
| title | Enforcing Energy Balance in Coherently Superimposed Optical Vortices |
| title_full | Enforcing Energy Balance in Coherently Superimposed Optical Vortices |
| title_fullStr | Enforcing Energy Balance in Coherently Superimposed Optical Vortices |
| title_full_unstemmed | Enforcing Energy Balance in Coherently Superimposed Optical Vortices |
| title_short | Enforcing Energy Balance in Coherently Superimposed Optical Vortices |
| title_sort | enforcing energy balance in coherently superimposed optical vortices |
| topic | Diffraction gratings optical vortices coherent communications free-space optical communications. |
| url | https://ieeexplore.ieee.org/document/8304626/ |
| work_keys_str_mv | AT jaimecisternas enforcingenergybalanceincoherentlysuperimposedopticalvortices AT jaimeaanguita enforcingenergybalanceincoherentlysuperimposedopticalvortices AT gustavofunes enforcingenergybalanceincoherentlysuperimposedopticalvortices |