Multicolor concentric ultrafast vortex beams with controllable orbital angular momentum

Increasing any degree of freedom of vortex light beam can broaden the application area of this special light beam. Here, up to nine multicolor concentric ultrafast vortex beams (MUCU-VBs) with controllable orbital angular momentum (OAM) are generated simultaneously using cascaded four-wave mixing in...

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Bibliographic Details
Published in:Applied physics letters 2022-02, Vol.120 (6)
Main Authors: Huang, Shunlin, Wang, Peng, Shen, Xiong, Liu, Jun, Li, Ruxin
Format: Article
Language:English
Subjects:
Aluminum
Angular momentum
Applied physics
Electron beams
Four-wave mixing
Light beams
Microparticles
Optical communication
Optical properties
Sidebands
Vortices
Yttrium
Yttrium-aluminum garnet
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Summary:Increasing any degree of freedom of vortex light beam can broaden the application area of this special light beam. Here, up to nine multicolor concentric ultrafast vortex beams (MUCU-VBs) with controllable orbital angular momentum (OAM) are generated simultaneously using cascaded four-wave mixing in an yttrium aluminum garnet plate. The topological charges (TCs) of the MUCU-VBs are controllable by changing the TCs of the two input pump beams. The MUCU-VBs can be manipulated simultaneously in temporal, spatial, and spectral domains and OAM state, which will be of wide and special applications, such as multicolor pump-probe experiments, simultaneous microparticle manipulation, and optical communication. Moreover, the special focusing properties of the multicolor ultrafast sidebands, such as multi-focus of different wavelengths, may further extend their application areas. The method can be used to generate MUCU-VBs in other spectral ranges such as UV or mid-infrared.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0081005