Optical spin-to-orbital angular momentum conversion in inhomogeneous anisotropic media

被引：1806

作者：

Marrucci, L

Manzo, C

Paparo, D

机构：

[1] Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy

[2] CNR, INFM Coherentia, I-80126 Naples, Italy

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.96.163905

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate experimentally an optical process in which the spin angular momentum carried by a circularly polarized light beam is converted into orbital angular momentum, leading to the generation of helical modes with a wave-front helicity controlled by the input polarization. This phenomenon requires the interaction of light with matter that is both optically inhomogeneous and anisotropic. The underlying physics is also associated with the so-called Pancharatnam-Berry geometrical phases involved in any inhomogeneous transformation of the optical polarization.

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页数：4

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