Detalhes bibliográficos
| Resumo: | A four-rod solar pumping concept is proposed for the significant improvement in TEM 00 -mode solar laser performance. A quadrangular pyramidal reflector is used to separate the focused solar rays from a 2.0-m diameter parabolic mirror into four focal spots. Four laser heads, each one consisting of a double-stage biconical lens/conical pump cavity and a small diameter Nd:YAG rod, are placed at each of the four focal zones. TEM 00 -mode laser output of 7.22 W is numerically obtained from each rod, resulting in 28.9 W(4 × 7.22 W) total TEM 00 -mode power from the four-rod scheme with 9.41 W/m 2 collection efficiency. This value is 2.5 times more than that of the numerically calculated laser power collection efficiency from a single-rod pumped by the same parabolic mirror. A brightness conversion efficiency of 0.86% is achieved. Substantial improvements in TEM 00 -mode solar laser stability and thermal performance are also numerically demonstrated. |
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| Autores principais: | Almeida, Joana |
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| Outros Autores: | Liang, Dawei; Tibúrcio, Bruno D.; Garcia, Dário; Vistas, Cláudia R. |
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| Assunto: | four-rod Nd:YAG. parabolic mirror solar laser solar pumping TEM -mode Atomic and Molecular Physics, and Optics Renewable Energy, Sustainability and the Environment SDG 7 - Affordable and Clean Energy |
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| Ano: | 2019 |
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| País: | Portugal |
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| Tipo de documento: | artigo |
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| Tipo de acesso: | acesso aberto |
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| Instituição associada: | Universidade Nova de Lisboa |
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| Idioma: | inglês |
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| Origem: | Repositório Institucional da UNL |
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