Spin-orbit interactions in a nonlinear medium due to a nonlinear-induced geometric phase

被引：8

作者：

Guan, Fuxin ^{[1
]}

Hu, Yue ^{[1
]}

Dai, Xiaoyu ^{[2
]}

Ling, Xiaohui ^{[3
]}

Ma, Shaojie ^{[1
]}

Lin, Jing ^{[4
,5
]}

Dong, Shaohua ^{[1
]}

Xiang, Yuanjiang ^{[2
]}

机构：

[1] Shenzhen Univ, Inst Microscale Optoelect, Shenzhen 518060, Peoples R China

[2] Hunan Univ, Sch Phys & Elect, Changsha 410082, Hunan, Peoples R China

[3] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China

[4] Fudan Univ, Key Lab Micro & Nano Photon Struct, State Key Lab Surface Phys, Minist Educ, Shanghai 200433, Peoples R China

[5] Fudan Univ, Phys Dept, Shanghai 200433, Peoples R China

来源：

OPTICS LETTERS | 2021年 / 46卷 / 11期

基金：

中国国家自然科学基金;

关键词：

PANCHARATNAM-BERRY PHASE; TOPOLOGICAL PHASE; POLARIZATION; MOMENTUM; LIGHT; GENERATION; PHOTONS; SPACE; BEAMS;

D O I：

10.1364/OL.426124

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In general, a spin-polarized light beam cannot couple its spin angular momentum (SAM) with intrinsic orbital angular momentum (IOAM) without spin reversal. Here we find that nonlinear media can give the spin-polarized photon an IOAM, as they travel in the media due to the nonlinear susceptibility along the transmission direction, which does not require spin reversal. To characterize this SAM-to-IOAM conversion process, we establish an evolution ray equation for photons carrying IOAM by reference to the Schrodinger equation. We further reveal the inherent physics of such a phenomenon from a full-wave perspective and find that the vortex generation originates from the nonlinear-induced geometric phase. (C) 2021 Optical Society of America

引用

页码：2758 / 2761

页数：4

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