946/1030 nm Dual-Wavelength Laguerre-Gaussian (LG<sub>01</sub>) Mode Vortex Laser Based on Intracavity Cascade Pumped Resonator
In this paper, the 946/1030 nm dual-wavelength LG<sub>01</sub> mode vortex laser is obtained by applying the intracavity cascade pumped structure and annular-beam end-pumped method, an innovative and pioneering exploration of the transverse mode of the dual-wavelength laser. First, we de...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/4/441 |
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| author | Yashuai Yang Yongliang Li Chi Wang Chao Yang |
| author_facet | Yashuai Yang Yongliang Li Chi Wang Chao Yang |
| author_sort | Yashuai Yang |
| collection | DOAJ |
| description | In this paper, the 946/1030 nm dual-wavelength LG<sub>01</sub> mode vortex laser is obtained by applying the intracavity cascade pumped structure and annular-beam end-pumped method, an innovative and pioneering exploration of the transverse mode of the dual-wavelength laser. First, we demonstrate the oscillation characteristic theoretical model of the dual-wavelength LG<sub>01</sub> mode laser, considering the reabsorption effect. Then the length of the laser crystal and the transmittance of the output mirror are simulated and analyzed, respectively, related to the oscillation characteristics of the 946 and 1030 nm LG<sub>01</sub> mode vortex lasers. Finally, a 946/1030 nm LG<sub>01</sub> mode vortex laser with the same handedness is successfully achieved in our experiment. With 20 W of annular-beam pump power, the output power of 946 and 1030 nm LG<sub>01</sub> mode vortex lasers is 0.404 and 0.510 W, the slope efficiency is 3.6% and 6.2%, and the total optical-optical conversion efficiency is 4.6%. At the maximum output power, the fluctuations of output power within 1 h are 4.02% and 4.23%, and the beam quality factors M<sup>2</sup> are 2.32 and 2.27, respectively, for 946 and 1030 nm LG<sub>01</sub> mode vortex lasers. The wavefront phase <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>exp</mi><mo stretchy="false">(</mo><mi>i</mi><mi>ϕ</mi><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula> of the 946/1030 nm dual-wavelength is also proved by the self-interference method. |
| first_indexed | 2024-03-11T04:37:51Z |
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| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-11T04:37:51Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-fab9a1d3b5784ed1afe8ba07561f34762023-11-17T20:58:06ZengMDPI AGPhotonics2304-67322023-04-0110444110.3390/photonics10040441946/1030 nm Dual-Wavelength Laguerre-Gaussian (LG<sub>01</sub>) Mode Vortex Laser Based on Intracavity Cascade Pumped ResonatorYashuai Yang0Yongliang Li1Chi Wang2Chao Yang3School of Opto-Electronics Engineering, Changchun University of Science and Technology, Changchun 130022, ChinaSchool of Opto-Electronics Engineering, Changchun University of Science and Technology, Changchun 130022, ChinaSchool of Opto-Electronics Engineering, Changchun University of Science and Technology, Changchun 130022, ChinaSchool of Opto-Electronics Engineering, Changchun University of Science and Technology, Changchun 130022, ChinaIn this paper, the 946/1030 nm dual-wavelength LG<sub>01</sub> mode vortex laser is obtained by applying the intracavity cascade pumped structure and annular-beam end-pumped method, an innovative and pioneering exploration of the transverse mode of the dual-wavelength laser. First, we demonstrate the oscillation characteristic theoretical model of the dual-wavelength LG<sub>01</sub> mode laser, considering the reabsorption effect. Then the length of the laser crystal and the transmittance of the output mirror are simulated and analyzed, respectively, related to the oscillation characteristics of the 946 and 1030 nm LG<sub>01</sub> mode vortex lasers. Finally, a 946/1030 nm LG<sub>01</sub> mode vortex laser with the same handedness is successfully achieved in our experiment. With 20 W of annular-beam pump power, the output power of 946 and 1030 nm LG<sub>01</sub> mode vortex lasers is 0.404 and 0.510 W, the slope efficiency is 3.6% and 6.2%, and the total optical-optical conversion efficiency is 4.6%. At the maximum output power, the fluctuations of output power within 1 h are 4.02% and 4.23%, and the beam quality factors M<sup>2</sup> are 2.32 and 2.27, respectively, for 946 and 1030 nm LG<sub>01</sub> mode vortex lasers. The wavefront phase <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>exp</mi><mo stretchy="false">(</mo><mi>i</mi><mi>ϕ</mi><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula> of the 946/1030 nm dual-wavelength is also proved by the self-interference method.https://www.mdpi.com/2304-6732/10/4/441dual-wavelength laserLG<sub>01</sub> modeintracavity pumped |
| spellingShingle | Yashuai Yang Yongliang Li Chi Wang Chao Yang 946/1030 nm Dual-Wavelength Laguerre-Gaussian (LG<sub>01</sub>) Mode Vortex Laser Based on Intracavity Cascade Pumped Resonator Photonics dual-wavelength laser LG<sub>01</sub> mode intracavity pumped |
| title | 946/1030 nm Dual-Wavelength Laguerre-Gaussian (LG<sub>01</sub>) Mode Vortex Laser Based on Intracavity Cascade Pumped Resonator |
| title_full | 946/1030 nm Dual-Wavelength Laguerre-Gaussian (LG<sub>01</sub>) Mode Vortex Laser Based on Intracavity Cascade Pumped Resonator |
| title_fullStr | 946/1030 nm Dual-Wavelength Laguerre-Gaussian (LG<sub>01</sub>) Mode Vortex Laser Based on Intracavity Cascade Pumped Resonator |
| title_full_unstemmed | 946/1030 nm Dual-Wavelength Laguerre-Gaussian (LG<sub>01</sub>) Mode Vortex Laser Based on Intracavity Cascade Pumped Resonator |
| title_short | 946/1030 nm Dual-Wavelength Laguerre-Gaussian (LG<sub>01</sub>) Mode Vortex Laser Based on Intracavity Cascade Pumped Resonator |
| title_sort | 946 1030 nm dual wavelength laguerre gaussian lg sub 01 sub mode vortex laser based on intracavity cascade pumped resonator |
| topic | dual-wavelength laser LG<sub>01</sub> mode intracavity pumped |
| url | https://www.mdpi.com/2304-6732/10/4/441 |
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