摘要
A 1645-nm single-frequency vortex beam with narrow linewidth from an Er:YAG nonplanar ring oscillator (NPRO) using an annular pump beam is demonstrated. The pump beam from a 1532-nm fiber laser is shaped to an annular beam by an axicon. The Er:YAG NPRO generates a 1.96-W single-frequency vortex beam under a pump power of 13 W. The linewidth of the 1645-nm vortex laser is measured as 6 kHz. This work provides a convenient way of single-frequency vortex beam generation.
源语言 | 英语 |
---|---|
页(从-至) | 331-334 |
页数 | 4 |
期刊 | Optics Letters |
卷 | 48 |
期 | 2 |
DOI | |
出版状态 | 已出版 - 15 1月 2023 |
指纹
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Wang, K., Zhang, X., Fu, S., & Gao, C. (2023). 1645-nm single-frequency vortex laser from an Er:YAG nonplanar ring oscillator. Optics Letters, 48(2), 331-334. https://doi.org/10.1364/OL.478505