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<p>We reported the first tunable quasi-three-level Nd:NaLa(WO<sub>4</sub>)<sub>2</sub> laser on the <sup>4</sup>F<sub>3/2</sub> → <sup>4</sup>I<sub>9/2</sub> transition with the tuning widths of 19.8&#xa0;nm (900.1–919.9&#xa0;nm). At an absorbed pump power of 19.2 W at 803&#xa0;nm, the maximum output power of the quasi-three-level Nd:NaLa(WO<sub>4</sub>)<sub>2</sub> laser was 5.48 W at 912.3&#xa0;nm. Further, a continuous-wave (CW) orthogonally polarized dual-wavelength Nd:GdVO<sub>4</sub>/Nd:YVO<sub>4</sub> laser at 1341 and 1342&#xa0;nm on the <sup>4</sup>F<sub>3/2</sub> → <sup>4</sup>I<sub>13/2</sub> transition was demonstrated by pumping with the tunable quasi-three-level Nd:NaLa(WO<sub>4</sub>)<sub>2</sub> laser for the first time. The ratio of output powers of the orthogonally polarized dual-wavelength laser could be controlled by rotating the Lyot filter. The orthogonally polarized dual-wavelength laser at 1341 and 1342&#xa0;nm was obtained with the highest total output power of 1.08 W and the power ratio of 1:1. The highest total slope efficiency and total optical-to-optical conversion efficiency with respect to the absorbed pump power at 913.2&#xa0;nm were 35.7 and 29.3%, respectively. Furthermore, a linearity CW polarized dual-wavelength laser at 1341 and 1342&#xa0;nm was also realized with an adjustable ratio of output spectral intensities and a highest total output power of 1.31 W.</p>

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Tunable quasi-three-level Nd:NaLa(WO4)2 laser pumped dual-wavelength Nd:GdVO4/Nd:YVO4 laser at 1341 and 1342 nm with adjustable ratio of output powers

  • 期刊论文

  • 发表日期：

    2025年2月3日

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  • Chu Chu,
  • Xinghua Yang,
  • Changli Li,
  • Chong Chen,
  • Shuang Wang

摘要

We reported the first tunable quasi-three-level Nd:NaLa(WO4)2 laser on the 4F3/2 → 4I9/2 transition with the tuning widths of 19.8 nm (900.1–919.9 nm). At an absorbed pump power of 19.2 W at 803 nm, the maximum output power of the quasi-three-level Nd:NaLa(WO4)2 laser was 5.48 W at 912.3 nm. Further, a continuous-wave (CW) orthogonally polarized dual-wavelength Nd:GdVO4/Nd:YVO4 laser at 1341 and 1342 nm on the 4F3/2 → 4I13/2 transition was demonstrated by pumping with the tunable quasi-three-level Nd:NaLa(WO4)2 laser for the first time. The ratio of output powers of the orthogonally polarized dual-wavelength laser could be controlled by rotating the Lyot filter. The orthogonally polarized dual-wavelength laser at 1341 and 1342 nm was obtained with the highest total output power of 1.08 W and the power ratio of 1:1. The highest total slope efficiency and total optical-to-optical conversion efficiency with respect to the absorbed pump power at 913.2 nm were 35.7 and 29.3%, respectively. Furthermore, a linearity CW polarized dual-wavelength laser at 1341 and 1342 nm was also realized with an adjustable ratio of output spectral intensities and a highest total output power of 1.31 W.