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

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

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
6 Downloads (Pure)

Abstract

An adjustable optical vortex array (OVA) 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
Pages (from-to)2599-2602
Number of pages4
JournalOptics Letters
Volume48
Issue number10
DOIs
Publication statusPublished - 05 May 2023
Externally publishedYes

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