Transverse mode locking of different frequency-degenerate families based on annular beam pumping
| Autor: | Shunqin Zhang, Nigel Copner, Fu Zenan, Fuqiang Jia, Yuanlong Fan, Lai Linquan, Dun Qiao, Kang Li |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
business.industry Degenerate energy levels Energy conversion efficiency Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics law.invention Transverse mode Power (physics) 010309 optics Axicon Optics Mode-locking law 0103 physical sciences 0210 nano-technology business Optical vortex |
| Zdroj: | Optics letters. 46(13) |
| ISSN: | 1539-4794 |
| Popis: | Optical vortex arrays have been achieved in an end-pumped N d : Y V O 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. |
| Databáze: | OpenAIRE |
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