Abstract
In this paper, we theoretically propose a new method to generate and tune the optical orbital angular momentum. A focused Gaussian beam passing through an optical superlattice under the electro-optic effect carries orbital angular momentum (OAM). This kind of OAM arises from the curl of the polarization. By adjusting the external electric field, the beam waist radius and the crystal length, we can obtain a dramatic variation of the OAM across the output light transverse section. This invention will find applications in the area of optical manipulation.
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Wang, J., Shi, J., Tian, L. et al. Tuning the optical orbital angular momentum of a focused Gaussian beam in an optical supperlattice under the electro-optic effect. Journal of the Korean Physical Society 60, 1274–1277 (2012). https://doi.org/10.3938/jkps.60.1274
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DOI: https://doi.org/10.3938/jkps.60.1274