Free-space propagation of spatiotemporal optical vortices

被引：194

作者：

Hancock, S. W. ^{[1
]}

Zahedpour, S. ^{[1
]}

Goffin, A. ^{[1
]}

Milchberg, H. M. ^{[1
]}

机构：

[1] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA

来源：

OPTICA | 2019年 / 6卷 / 12期

基金：

美国国家科学基金会;

关键词：

ANGULAR-MOMENTUM; LIGHT; TURBULENCE;

D O I：

10.1364/OPTICA.6.001547

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Spatiotemporal optical vortices (STOVs) are a new type of optical orbital angular momentum (OAM) with optical phase circulation in space-time. In prior work [Phys. Rev. X. 6, 031037 (2016)], we demonstrated that a STOV is a universal structure emerging from the arrest of self-focusing collapse leading to nonlinear self-guiding in material media. Here, we demonstrate linear generation and propagation in free space of STOV-carrying pulses. Our measurements and simulations demonstrate STOV mediation of space-time energy flow within the pulse and conservation of OAM in space-time. Single-shot amplitude and phase images of STOVs are taken using a new diagnostic, transient grating single-shot super-continuum spectral interferometry. (c) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：1547 / 1553

页数：7

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