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<p>A continuous-wave output power-ratio tunable orthogonally polarized laser (OPL) with single-wavelength emission at 1341&#xa0;nm was proposed using two Nd:GdVO<sub>4</sub> crystals and a coaxial diode-pumping. The operating temperature of the LD and the position of the pump beam waist were optimized to realize high efficiency with balanced output power, as well as large tuning range of power ratio between two polarization components. The OPL at 1341&#xa0;nm was obtained with the highest total output power of 5.61 W and the power ratio of 1:1. The total slope efficiency and total optical-to-optical conversion efficiency with respect to the absorbed pump power at 912.19&#xa0;nm were 32.1% and 29.5%, respectively. To the best of our knowledge, this is the first time an OPL has been realized in the Nd:GdVO<sub>4</sub> composite crystals. The OPLs have important application prospects in the fields of laser medicine, scientific research and terahertz radiation.</p>

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Output power-ratio tunable orthogonally polarized Nd:GdVO4 laser at 1341 nm with coaxial diode-pumping

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • Y. L. Li,
  • H. L. Feng,
  • X. Y. Zhang

摘要

A continuous-wave output power-ratio tunable orthogonally polarized laser (OPL) with single-wavelength emission at 1341 nm was proposed using two Nd:GdVO4 crystals and a coaxial diode-pumping. The operating temperature of the LD and the position of the pump beam waist were optimized to realize high efficiency with balanced output power, as well as large tuning range of power ratio between two polarization components. The OPL at 1341 nm was obtained with the highest total output power of 5.61 W and the power ratio of 1:1. The total slope efficiency and total optical-to-optical conversion efficiency with respect to the absorbed pump power at 912.19 nm were 32.1% and 29.5%, respectively. To the best of our knowledge, this is the first time an OPL has been realized in the Nd:GdVO4 composite crystals. The OPLs have important application prospects in the fields of laser medicine, scientific research and terahertz radiation.