title: Generation of optical vortex array with transformation of standing-wave Laguerre-Gaussian mode.
abstract: We develop a novel method of creating optical vortex array by the conversion of a standing-wave Laguerre-Gaussian (LG) mode. Theoretically, by employing the transformational relation, the standing-wave LG mode is verified to be transformed from a pair of crisscrossed Hermite-Gaussian (HG) modes, embedded with optical vortex array, consists of a TEMn,mmode and a TEMm,nmode. Due to close correspondence between the transformational relation and the mode conversion of astigmatic lenses, we successfully generate the optical vortex array by transforming a standing-wave LG mode into the crisscrossed HG modes via a π/2 cylindrical lens mode converter. The investigation may provide useful insight in the study of the vortex light beam and its further applications.
authors.affiliation: Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan.
authors.forename: Y C
authors.initials: YC
authors.lastname: Lin
authors.forename: T H
authors.initials: TH
authors.lastname: Lu
authors.forename: K F
authors.initials: KF
authors.lastname: Huang
authors.forename: Y F
authors.initials: YF
authors.lastname: Chen