High-power single-frequency handedness switchable vortex laser from an off-axis pumped Er:YAG nonplanar ring oscillator
We demonstrate a high-power single-frequency, handedness-switchable vortex laser at 1645 nm, directly generated from an off-axis pumped Er:YAG nonplanar ring oscillator. Narrow-linewidth Laguerre-Gauss (LG) modes of orders -2, -1, +1, and +2 are obtained, with output powers of 4.53 W, 7.09 W, 7.03 W and 4.58 W, respectively. The linewidth of the LG<sub>0,+2</sub> mode is measured to be 3.4 kHz. This work provides a compact and high-power vortex laser suitable for applications such as optical remote sensing.
Authors
- Shiyao Fu (ORCID: https://orcid.org/0000-0002-1450-3640)
- Lan Hai
- Chunqing Gao (ORCID: https://orcid.org/0000-0002-5716-4327)
- Jiawen Xiao (ORCID: https://orcid.org/0000-0002-8171-0770)
- Weichong Wu (ORCID: https://orcid.org/0000-0001-9985-4927)
- Zhizhen Zhang (ORCID: https://orcid.org/0009-0000-2516-7227)
- Qing Wang (ORCID: https://orcid.org/0000-0002-5471-1348)
- Yang Yu (ORCID: https://orcid.org/0000-0001-9592-8191)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-03-25
- DOI
- https://doi.org/10.1364/ol.560005
- Citations
- 2
- Primary Topic
- Advanced Fiber Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 2.49