Transverse mode locking of different frequency-degenerate families based on annular beam pumping

Shunqin Zhang, Zenan Fu, Linquan Lai, Fuqiang Jia, Dun Qiao, Yuanlong Fan, Kang Li, Nigel Copner

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Abstract

Optical vortex arrays have been achieved in an end-pumped Nd:YVO4 laser pumped by an annular beam. Spontaneous transverse mode locking of Laguerre-Gaussian modes in different frequency-degenerate families has been obtained by merely adjusting the pump power. The maximum output power of 0.88 W and the optical conversion efficiency of 13.6 % are achieved for optical vortex arrays. Optical vortex arrays formed in different frequency-degenerate families of Laguerre-Gaussian modes can be actively controlled by the position of the axicon. This work provides a way to research transverse mode locking of Laguerre-Gaussian modes in different frequency-degenerate families based on annular beam pumping.
Original languageEnglish
Article number425520
Pages (from-to)3195-3198
Number of pages4
JournalOptics Letters
Volume46
Issue number13
DOIs
Publication statusPublished - 8 Jun 2021

Keywords

  • Atomic and Molecular Physics, and Optics

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