TY - JOUR
T1 - Enforcing Energy Balance in Coherently Superimposed Optical Vortices
AU - Cisternas, Jaime
AU - Anguita, Jaime A.
AU - Funes, Gustavo
N1 - Funding Information:
Manuscript received December 20, 2017; revised February 21, 2018; accepted February 25, 2018. Date of publication February 28, 2018; date of current version March 23, 2018. This work was supported by the Chilean Science and Technology Commission (CONICYT) under Grant FR-1160887. Corresponding author: Jaime Cisternas (e-mail: [email protected]).
Publisher Copyright:
© 2009-2012 IEEE.
PY - 2018/4
Y1 - 2018/4
N2 - 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.
AB - 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.
KW - Diffraction gratings
KW - coherent communications
KW - free-space optical communications
KW - optical vortices
KW - coherent communications
KW - Diffraction gratings
KW - free-space optical communications
KW - Optical vortices
UR - http://www.scopus.com/inward/record.url?scp=85042881010&partnerID=8YFLogxK
U2 - 10.1109/JPHOT.2018.2810446
DO - 10.1109/JPHOT.2018.2810446
M3 - Article
AN - SCOPUS:85042881010
SN - 1943-0655
VL - 10
JO - IEEE Photonics Journal
JF - IEEE Photonics Journal
IS - 2
M1 - 7901712
ER -