A Watt-Level, High-Quality LG<sub>0,±1</sub> Vortex Beam made from a Nd:YVO<sub>4</sub> Laser Pumped by an Annular Beam
In this work, we demonstrate a Watt-level, high-quality Laguerre–Gaussian (LG) LG<sub>0±1</sub> vortex mode directly output from an end-pumped Nd:YVO<sub>4</sub> laser by using an axicon-based annular pump beam. A theoretical model for the annular beam end-pumped solid-state...
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MDPI AG
2024-09-01
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| author | Minghao Guo Xin Tao Yueqing Li Shirui Zhang Zhenkun Wu Yuzong Gu Peng Li |
| author_facet | Minghao Guo Xin Tao Yueqing Li Shirui Zhang Zhenkun Wu Yuzong Gu Peng Li |
| author_sort | Minghao Guo |
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| description | In this work, we demonstrate a Watt-level, high-quality Laguerre–Gaussian (LG) LG<sub>0±1</sub> vortex mode directly output from an end-pumped Nd:YVO<sub>4</sub> laser by using an axicon-based annular pump beam. A theoretical model for the annular beam end-pumped solid-state laser with an LG vortex mode output was established. Chirality control of the vortex laser was achieved by carefully tilting the output coupler. Watt-level 1064 nm lasers with pure LG<sub>0,1</sub>/LG<sub>0,−1</sub> vortex mode, and the incoherent superposition mode of LG<sub>0,1</sub> odd and even petal modes, were achieved successively in our experiments. The intensity profile of the generated pure LG<sub>0,1</sub> vortex laser was measured, and it can be well fitted by using the standard expression of the LG<sub>0,1</sub> vortex mode. The beam quality of the pure LG<sub>0,1</sub> mode is M<i><sub>x</sub></i><sup>2</sup> = 2.01 and M<i><sub>y</sub></i><sup>2</sup> = 2.00 along the <i>x</i>-axis and <i>y</i>-axis, respectively. Our study demonstrates that that axicon-based annular pumping has great potential in developing high-power vortex solid-state lasers with simple and compact structures. |
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| language | English |
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| spelling | doaj-art-23c02d176a634a58b7a3ca69e5f8d6ce2025-08-20T01:55:46ZengMDPI AGPhotonics2304-67322024-09-0111984310.3390/photonics11090843A Watt-Level, High-Quality LG<sub>0,±1</sub> Vortex Beam made from a Nd:YVO<sub>4</sub> Laser Pumped by an Annular BeamMinghao Guo0Xin Tao1Yueqing Li2Shirui Zhang3Zhenkun Wu4Yuzong Gu5Peng Li6Key Laboratory for High Efficiency Energy Conversion Science and Technology of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, ChinaKey Laboratory for High Efficiency Energy Conversion Science and Technology of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, ChinaKey Laboratory for High Efficiency Energy Conversion Science and Technology of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, ChinaKey Laboratory for High Efficiency Energy Conversion Science and Technology of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, ChinaKey Laboratory for High Efficiency Energy Conversion Science and Technology of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, ChinaKey Laboratory for High Efficiency Energy Conversion Science and Technology of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, ChinaKey Laboratory for High Efficiency Energy Conversion Science and Technology of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, ChinaIn this work, we demonstrate a Watt-level, high-quality Laguerre–Gaussian (LG) LG<sub>0±1</sub> vortex mode directly output from an end-pumped Nd:YVO<sub>4</sub> laser by using an axicon-based annular pump beam. A theoretical model for the annular beam end-pumped solid-state laser with an LG vortex mode output was established. Chirality control of the vortex laser was achieved by carefully tilting the output coupler. Watt-level 1064 nm lasers with pure LG<sub>0,1</sub>/LG<sub>0,−1</sub> vortex mode, and the incoherent superposition mode of LG<sub>0,1</sub> odd and even petal modes, were achieved successively in our experiments. The intensity profile of the generated pure LG<sub>0,1</sub> vortex laser was measured, and it can be well fitted by using the standard expression of the LG<sub>0,1</sub> vortex mode. The beam quality of the pure LG<sub>0,1</sub> mode is M<i><sub>x</sub></i><sup>2</sup> = 2.01 and M<i><sub>y</sub></i><sup>2</sup> = 2.00 along the <i>x</i>-axis and <i>y</i>-axis, respectively. Our study demonstrates that that axicon-based annular pumping has great potential in developing high-power vortex solid-state lasers with simple and compact structures.https://www.mdpi.com/2304-6732/11/9/843Nd:YVO<sub>4</sub> laseraxicon-based annular beamvortex laserchirality control |
| spellingShingle | Minghao Guo Xin Tao Yueqing Li Shirui Zhang Zhenkun Wu Yuzong Gu Peng Li A Watt-Level, High-Quality LG<sub>0,±1</sub> Vortex Beam made from a Nd:YVO<sub>4</sub> Laser Pumped by an Annular Beam Photonics Nd:YVO<sub>4</sub> laser axicon-based annular beam vortex laser chirality control |
| title | A Watt-Level, High-Quality LG<sub>0,±1</sub> Vortex Beam made from a Nd:YVO<sub>4</sub> Laser Pumped by an Annular Beam |
| title_full | A Watt-Level, High-Quality LG<sub>0,±1</sub> Vortex Beam made from a Nd:YVO<sub>4</sub> Laser Pumped by an Annular Beam |
| title_fullStr | A Watt-Level, High-Quality LG<sub>0,±1</sub> Vortex Beam made from a Nd:YVO<sub>4</sub> Laser Pumped by an Annular Beam |
| title_full_unstemmed | A Watt-Level, High-Quality LG<sub>0,±1</sub> Vortex Beam made from a Nd:YVO<sub>4</sub> Laser Pumped by an Annular Beam |
| title_short | A Watt-Level, High-Quality LG<sub>0,±1</sub> Vortex Beam made from a Nd:YVO<sub>4</sub> Laser Pumped by an Annular Beam |
| title_sort | watt level high quality lg sub 0 1 sub vortex beam made from a nd yvo sub 4 sub laser pumped by an annular beam |
| topic | Nd:YVO<sub>4</sub> laser axicon-based annular beam vortex laser chirality control |
| url | https://www.mdpi.com/2304-6732/11/9/843 |
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