Abstract
We explore the phase distribution of the cross-spectral density (CSD) function with an off-axis reference point of a focused higher-order partially coherent vortex (PCV) beam in the focal plane. Our results reveal that the numbers of ring dislocations and screw dislocations in the CSD function equal to the magnitudes of the azimuthal mode index and radial mode index of the incident beam, respectively. In addition, the sign of the azimuthal mode index determines the direction of the phase change of the screw dislocation. This phenomenon can be used to measure the magnitude and sign of the mode indices of a higher-order PCV beam simultaneously. Our results will be useful for quantum information processing, optical storage, and communications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
