We experimentally demonstrate beam radial displacement and azimuthal rotation angle measurements using the intensity gradient of a beam composed of multiple OAM modes. Compared with a Gaussian beam or a beam carrying two opposite OAM modes, using a beam composed of multiple OAM modes can improve the measurement accuracy with the same beam power.

© 2019 The Author(s)

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription