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Ce:Nd:YAG Solar Laser with 4.5% Solar-to-Laser Conversion Efficiency

Author

Listed:
  • Dário Garcia

    (Centre of Physics and Technological Research, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal)

  • Dawei Liang

    (Centre of Physics and Technological Research, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal)

  • Cláudia R. Vistas

    (Centre of Physics and Technological Research, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal)

  • Hugo Costa

    (Centre of Physics and Technological Research, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal)

  • Miguel Catela

    (Centre of Physics and Technological Research, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal)

  • Bruno D. Tibúrcio

    (Centre of Physics and Technological Research, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal)

  • Joana Almeida

    (Centre of Physics and Technological Research, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal)

Abstract

The efficiency potential of a small-size solar-pumped laser is studied here. The solar laser head was composed of a fused silica aspheric lens and a conical pump cavity, which coupled and redistributed the concentrated solar radiation from the focal zone of a parabolic mirror with an effective collection area of 0.293 m 2 to end-side pump a Ce (0.1 at%):Nd (1.1 at%):YAG rod of 2.5 mm diameter and 25 mm length. Optimum solar laser design parameters were found through Zemax © non-sequential ray-tracing and LASCAD™ analysis. The utilization of the Ce:Nd:YAG medium with small diameter pumped by a small-scale solar concentrator was essential to significantly enhance the end-side pump solar laser efficiency and thermal performance. For 249 W incoming solar power at an irradiance of 850 W/m 2 , 11.2 W multimode solar laser power was measured, corresponding to the record solar-to-laser power conversion efficiency of 4.50%, being, to the best of our knowledge, 1.22 times higher than the previous record. Moreover, the highest solar laser collection efficiency of 38.22 W/m 2 and slope efficiency of 6.8% were obtained, which are 1.18 and 1.02 times, respectively, higher than the previous records. The lowest threshold solar power of a Ce:Nd:YAG solar-pumped laser is also reported here.

Suggested Citation

  • Dário Garcia & Dawei Liang & Cláudia R. Vistas & Hugo Costa & Miguel Catela & Bruno D. Tibúrcio & Joana Almeida, 2022. "Ce:Nd:YAG Solar Laser with 4.5% Solar-to-Laser Conversion Efficiency," Energies, MDPI, vol. 15(14), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:5292-:d:868278
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    References listed on IDEAS

    as
    1. Cláudia R. Vistas & Dawei Liang & Dário Garcia & Miguel Catela & Bruno D. Tibúrcio & Hugo Costa & Emmanuel Guillot & Joana Almeida, 2022. "Uniform and Non-Uniform Pumping Effect on Ce:Nd:YAG Side-Pumped Solar Laser Output Performance," Energies, MDPI, vol. 15(10), pages 1-12, May.
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    Cited by:

    1. Dário Garcia & Dawei Liang & Joana Almeida & Miguel Catela & Hugo Costa & Bruno D. Tibúrcio & Emmanuel Guillot & Cláudia R. Vistas, 2023. "Efficient Production of Doughnut-Shaped Ce:Nd:YAG Solar Laser Beam," Sustainability, MDPI, vol. 15(18), pages 1-16, September.
    2. Garcia, Dário & Liang, Dawei & Almeida, Joana & Catela, Miguel & Costa, Hugo & Tibúrcio, Bruno D. & Guillot, Emmanuel & Vistas, Cláudia R., 2023. "Lowest-threshold solar laser operation under cloudy sky condition," Renewable Energy, Elsevier, vol. 210(C), pages 127-133.

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    1. Garcia, Dário & Liang, Dawei & Almeida, Joana & Catela, Miguel & Costa, Hugo & Tibúrcio, Bruno D. & Guillot, Emmanuel & Vistas, Cláudia R., 2023. "Lowest-threshold solar laser operation under cloudy sky condition," Renewable Energy, Elsevier, vol. 210(C), pages 127-133.

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