High-efficiency solar laser pumping by a ring-array concentrator
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/75821 |
Resumo: | Aiming to significantly improve solar laser efficiency, in this thesis, a 20 mm length 5.5 mm diameter Nd:YAG single-crystal rod can be efficiently pumped by highly concentrated solar radiation through a modified ring-array concentrator. Composed of six coaxial parabolic reflective rings and a small diameter Fresnel lens, the 1500 mm diameter modified ring-array concentrator can tightly focus incoming solar radiation into a 5.0 mm full width at half maximum focal spot. An innovative aspherical fused silica concentrator allows further pump light concentration into the Nd:YAG rod at the focal zone. A simple but effective water-cooling scheme within the aspherical concentrator constitutes another highlight of this assembly. Strong dependency of solar laser power on the rim angle of the ring-array concentrator was found through ZEMAX™ and LASCADTM analyses. A continuous-wave solar laser power of 67.8 W at 1064 nm and 38.4 W/m2 collection efficiency was numerically calculated, being 1.22 times more than the previous record. Also, 1.29, 1.03 and 1.85 times improvements in conversion, slope efficiencies and brightness figure of merit, respectively, were numerically achieved. The tracking error influence on solar laser output power was numerically calculated. A simple 1:7 scale model of the ring-array concentrator was also built to verify how the primary focusing performs in direct sunlight. |
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High-efficiency solar laser pumping by a ring-array concentratorRing-arrayConcentratorSolar-pumpedLaserNd:YAGDomínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e TecnologiasAiming to significantly improve solar laser efficiency, in this thesis, a 20 mm length 5.5 mm diameter Nd:YAG single-crystal rod can be efficiently pumped by highly concentrated solar radiation through a modified ring-array concentrator. Composed of six coaxial parabolic reflective rings and a small diameter Fresnel lens, the 1500 mm diameter modified ring-array concentrator can tightly focus incoming solar radiation into a 5.0 mm full width at half maximum focal spot. An innovative aspherical fused silica concentrator allows further pump light concentration into the Nd:YAG rod at the focal zone. A simple but effective water-cooling scheme within the aspherical concentrator constitutes another highlight of this assembly. Strong dependency of solar laser power on the rim angle of the ring-array concentrator was found through ZEMAX™ and LASCADTM analyses. A continuous-wave solar laser power of 67.8 W at 1064 nm and 38.4 W/m2 collection efficiency was numerically calculated, being 1.22 times more than the previous record. Also, 1.29, 1.03 and 1.85 times improvements in conversion, slope efficiencies and brightness figure of merit, respectively, were numerically achieved. The tracking error influence on solar laser output power was numerically calculated. A simple 1:7 scale model of the ring-array concentrator was also built to verify how the primary focusing performs in direct sunlight.Liang, DaweiRUNMatos, Rodrigo da Cunha Antunes Gomes de2019-07-18T14:08:12Z2019-0720192019-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/75821enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:34:41Zoai:run.unl.pt:10362/75821Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:35:34.855317Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
High-efficiency solar laser pumping by a ring-array concentrator |
title |
High-efficiency solar laser pumping by a ring-array concentrator |
spellingShingle |
High-efficiency solar laser pumping by a ring-array concentrator Matos, Rodrigo da Cunha Antunes Gomes de Ring-array Concentrator Solar-pumped Laser Nd:YAG Domínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
title_short |
High-efficiency solar laser pumping by a ring-array concentrator |
title_full |
High-efficiency solar laser pumping by a ring-array concentrator |
title_fullStr |
High-efficiency solar laser pumping by a ring-array concentrator |
title_full_unstemmed |
High-efficiency solar laser pumping by a ring-array concentrator |
title_sort |
High-efficiency solar laser pumping by a ring-array concentrator |
author |
Matos, Rodrigo da Cunha Antunes Gomes de |
author_facet |
Matos, Rodrigo da Cunha Antunes Gomes de |
author_role |
author |
dc.contributor.none.fl_str_mv |
Liang, Dawei RUN |
dc.contributor.author.fl_str_mv |
Matos, Rodrigo da Cunha Antunes Gomes de |
dc.subject.por.fl_str_mv |
Ring-array Concentrator Solar-pumped Laser Nd:YAG Domínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
topic |
Ring-array Concentrator Solar-pumped Laser Nd:YAG Domínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
description |
Aiming to significantly improve solar laser efficiency, in this thesis, a 20 mm length 5.5 mm diameter Nd:YAG single-crystal rod can be efficiently pumped by highly concentrated solar radiation through a modified ring-array concentrator. Composed of six coaxial parabolic reflective rings and a small diameter Fresnel lens, the 1500 mm diameter modified ring-array concentrator can tightly focus incoming solar radiation into a 5.0 mm full width at half maximum focal spot. An innovative aspherical fused silica concentrator allows further pump light concentration into the Nd:YAG rod at the focal zone. A simple but effective water-cooling scheme within the aspherical concentrator constitutes another highlight of this assembly. Strong dependency of solar laser power on the rim angle of the ring-array concentrator was found through ZEMAX™ and LASCADTM analyses. A continuous-wave solar laser power of 67.8 W at 1064 nm and 38.4 W/m2 collection efficiency was numerically calculated, being 1.22 times more than the previous record. Also, 1.29, 1.03 and 1.85 times improvements in conversion, slope efficiencies and brightness figure of merit, respectively, were numerically achieved. The tracking error influence on solar laser output power was numerically calculated. A simple 1:7 scale model of the ring-array concentrator was also built to verify how the primary focusing performs in direct sunlight. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-07-18T14:08:12Z 2019-07 2019 2019-07-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10362/75821 |
url |
http://hdl.handle.net/10362/75821 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137976822792192 |