Generation of a vortex point adjustable vortex array based on decentered annular beam pumping

Kongtao Chen, Lixu Xu, Aodong Ni, Jiale Tang, Kaiwen Yi, Fuqiang Jia*, Dun Qiao, Kang Li, Nigel Copner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

An adjustable optical vortex arrays (OVAs) based on decentered annular beam pumping has been demonstrated in an end-pumped Nd:YVO4 laser. This method allows for not only the transverse mode locking of different modes, but also the ability to adjust the mode weight and phase by manipulating the position of the focusing lens and axicon lens. To explain this phenomenon, we propose a threshold model for each mode. Using this approach, we were able to generate optical vortex arrays with 2-7 phase singularities, achieving a maximum conversion efficiency of 25.8%. Our work represents an innovative advancement in the development of solid-state lasers capable of generating adjustable vortex points.
Original languageEnglish
Article number49014
Pages (from-to)2599-2602
JournalOptics Letters
Volume48
Issue number10
Early online date14 Apr 2023
DOIs
Publication statusPublished - 18 Apr 2023

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