Transverse mode locking of different frequency-degenerate families based on annular beam pumping
- Resource Type
- Article
- Authors
- Zhang, Shunqin; Fu, Zenan; Lai, Linquan; Jia, Fuqiang; Qiao, Dun; Fan, Yuanlong; Li, Kang; Copner, Nigel
- Source
- Optics Letters; July 2021, Vol. 46 Issue: 13 p3195-3198, 4p
- Subject
- Language
- ISSN
- 01469592; 15394794
Optical vortex arrays have been achieved in an end-pumped Nd:YVO_4 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. A maximum output power of 0.88 W and 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.