Controlling the orbital angular momentum of high harmonic vortices

被引：168

作者：

Kong, Fanqi ^{[1
,2
,3
]}

Zhang, Chunmei ^{[1
,2
,3
]}

Bouchard, Frederic ^{[1
]}

Li, Zhengyan ^{[1
,2
,3
]}

Brown, Graham G. ^{[1
,2
,3
]}

Ko, Dong Hyuk ^{[1
,2
,3
]}

Hammond, T. J. ^{[1
,2
,3
]}

Arissian, Ladan ^{[2
,3
]}

Boyd, Robert W. ^{[1
,4
]}

Karimi, Ebrahim ^{[1
]}

Corkum, P. B. ^{[1
,2
,3
]}

机构：

[1] Univ Ottawa, Dept Phys, 25 Templeton St, Ottawa, ON K1N 6N5, Canada

[2] Univ Ottawa, Joint Attosecond Sci Lab, 100 Sussex Dr, Ottawa, ON K1N 5A2, Canada

[3] Natl Res Council Canada, 100 Sussex Dr, Ottawa, ON K1N 5A2, Canada

[4] Univ Rochester, Inst Opt, Rochester, NY 14627 USA

来源：

NATURE COMMUNICATIONS | 2017年 / 8卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

EXTREME-ULTRAVIOLET; GENERATION; MICROSCOPY; RESOLUTION; MODES; LIGHT; LASER; ENTANGLEMENT; PULSES; BEAMS;

D O I：

10.1038/ncomms14970

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Optical vortices, which carry orbital angular momentum (OAM), can be flexibly produced and measured with infrared and visible light. Their application is an important research topic for super-resolution imaging, optical communications and quantum optics. However, only a few methods can produce OAM beams in the extreme ultraviolet (XUV) or X-ray, and controlling the OAM on these beams remains challenging. Here we apply wave mixing to a tabletop high-harmonic source, as proposed in our previous work, and control the topological charge (OAM value) of XUV beams. Our technique enables us to produce first-order OAM beams with the smallest possible central intensity null at XUV wavelengths. This work opens a route for carrier-injected laser machining and lithography, which may reach nanometre or even angstrom resolution. Such a light source is also ideal for space communications, both in the classical and quantum regimes.

引用

页数：6

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