{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T19:03:30Z","timestamp":1777489410461,"version":"3.51.4"},"reference-count":40,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,5,13]],"date-time":"2022-05-13T00:00:00Z","timestamp":1652400000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Science and Technology Foundation of Portuguese Ministry of Science, Technology and Higher Education","award":["823802"],"award-info":[{"award-number":["823802"]}]},{"DOI":"10.13039\/501100000780","name":"Solar Facilities for European Research Area\u2014Third Phase (SFERA III)","doi-asserted-by":"publisher","award":["823802"],"award-info":[{"award-number":["823802"]}],"id":[{"id":"10.13039\/501100000780","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Energies"],"abstract":"<jats:p>The Ce:Nd:YAG is a recent active medium in solar-pumped lasers with great potential. This study focuses on the influence of two secondary concentrators: a fused silica aspherical lens and a rectangular fused silica light guide; and consequent pump light distribution on the output performance of a Ce:Nd:YAG side-pumped solar laser. The solar laser head with the aspherical lens concentrated the incident pump light on the central region of the rod, producing the highest continuous-wave 1064 nm solar laser power of 19.6 W from the Ce:Nd:YAG medium. However, the non-uniformity of the absorbed pump profile produced by the aspherical lens led to the rod fracture because of the high thermal load, limiting the maximum laser power. Nevertheless, the solar laser head with the light guide uniformly spread the pump light along the laser rod, minimizing the thermal load issues and producing a maximum laser power of 17.4 W. Despite the slight decrease in laser power, the use of the light guide avoided the laser rod fracture, demonstrating its potential to scale to higher laser power. Therefore, the pumping distribution on the rod may play a fundamental role for Ce:Nd:YAG solar laser systems design.<\/jats:p>","DOI":"10.3390\/en15103577","type":"journal-article","created":{"date-parts":[[2022,5,13]],"date-time":"2022-05-13T08:37:02Z","timestamp":1652431022000},"page":"3577","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Uniform and Non-Uniform Pumping Effect on Ce:Nd:YAG Side-Pumped Solar Laser Output Performance"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9370-1997","authenticated-orcid":false,"given":"Cl\u00e1udia R.","family":"Vistas","sequence":"first","affiliation":[{"name":"Centro de F\u00edsica e Investiga\u00e7\u00e3o Tecnol\u00f3gica, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4406-4108","authenticated-orcid":false,"given":"Dawei","family":"Liang","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica e Investiga\u00e7\u00e3o Tecnol\u00f3gica, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"given":"D\u00e1rio","family":"Garcia","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica e Investiga\u00e7\u00e3o Tecnol\u00f3gica, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2888-718X","authenticated-orcid":false,"given":"Miguel","family":"Catela","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica e Investiga\u00e7\u00e3o Tecnol\u00f3gica, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1951-2957","authenticated-orcid":false,"given":"Bruno D.","family":"Tib\u00farcio","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica e Investiga\u00e7\u00e3o Tecnol\u00f3gica, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0591-5309","authenticated-orcid":false,"given":"Hugo","family":"Costa","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica e Investiga\u00e7\u00e3o Tecnol\u00f3gica, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0552-0262","authenticated-orcid":false,"given":"Emmanuel","family":"Guillot","sequence":"additional","affiliation":[{"name":"PROMES-CNRS, 7 rue du Four Solaire, 66120 Font Romeu, France"}]},{"given":"Joana","family":"Almeida","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica e Investiga\u00e7\u00e3o Tecnol\u00f3gica, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Lando, M., Kagan, J.A., Shimony, Y., Kalisky, Y.Y., Noter, Y., Yogev, A., Rotman, S.R., and Rosenwaks, S. (1997). Solar-Pumped Solid State Laser Program, SPIE.","DOI":"10.1117\/12.281351"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"891","DOI":"10.1016\/j.asr.2012.06.001","article-title":"Design of a formation of solar pumped lasers for asteroid deflection","volume":"50","author":"Vasile","year":"2012","journal-title":"Adv. Space Res."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"08RF07","DOI":"10.7567\/JJAP.57.08RF07","article-title":"Crystalline silicon photovoltaic cells used for power transmission from solar-pumped lasers: III. Prototype for proof of the light trapping concept","volume":"57","author":"Yamada","year":"2018","journal-title":"Jpn. J. Appl. Phys."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1063\/1.1753794","article-title":"Sun pumped continuous optical maser","volume":"2","author":"Kiss","year":"1963","journal-title":"Appl. Phys. Lett."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"993","DOI":"10.1364\/AO.5.000993","article-title":"A Sun-Pumped cw One-Watt Laser","volume":"5","author":"Young","year":"1966","journal-title":"Appl. Opt."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1051","DOI":"10.1143\/JJAP.23.1051","article-title":"A Solar-Pumped cw 18 W Nd:YAG Laser","volume":"23","author":"Arashi","year":"1984","journal-title":"Jpn. J. Appl. Phys."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1222","DOI":"10.1109\/3.247","article-title":"Solar-pumped solid-state lasers","volume":"24","author":"Weksler","year":"1988","journal-title":"IEEE J. Quantum Electron."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"371","DOI":"10.1016\/S0030-4018(03)01601-8","article-title":"A solar-pumped Nd:YAG laser in the high collection efficiency regime","volume":"222","author":"Lando","year":"2003","journal-title":"Opt. Commun."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"2670","DOI":"10.1364\/OL.37.002670","article-title":"120 watt continuous wave solar-pumped laser with a liquid light-guide lens and an Nd:YAG rod","volume":"37","author":"Dinh","year":"2012","journal-title":"Opt. Lett."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1016\/j.solmat.2018.05.020","article-title":"Solar-pumped Cr:Nd:YAG ceramic laser with 6.7% slope efficiency","volume":"185","author":"Liang","year":"2018","journal-title":"Sol. Energy Mater. Sol. Cells"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1364\/OL.34.000175","article-title":"Solar-pumped 80 W laser irradiated by a Fresnel lens","volume":"34","author":"Ohkubo","year":"2009","journal-title":"Opt. Lett."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1970","DOI":"10.1364\/AO.54.001970","article-title":"Highly efficient end-side-pumped Nd:YAG solar laser by a heliostat-parabolic mirror system","volume":"54","author":"Almeida","year":"2015","journal-title":"Appl. Opt."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"7712","DOI":"10.1364\/AO.55.007712","article-title":"25 W\/m2 collection efficiency solar-pumped Nd:YAG laser by a heliostat-parabolic mirror system","volume":"55","author":"Liang","year":"2016","journal-title":"Appl. Opt."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"435","DOI":"10.1016\/j.solmat.2016.09.048","article-title":"Solar-pumped Nd:YAG laser with 31.5 W\/m2 multimode and 7.9 W\/m2 TEM00-mode collection efficiencies","volume":"159","author":"Liang","year":"2017","journal-title":"Sol. Energy Mater. Sol. Cells"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"027501","DOI":"10.1117\/1.JPE.8.027501","article-title":"5.04% system slope efficiency solar-pumped Nd:YAG laser by a heliostat-parabolic mirror system","volume":"8","author":"Guan","year":"2018","journal-title":"J. Photonics Energy"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1016\/j.optlastec.2018.05.039","article-title":"32.1 W\/m2 continuous wave solar-pumped laser with a bonding Nd:YAG\/YAG rod and a Fresnel lens","volume":"107","author":"Guan","year":"2018","journal-title":"Opt. Laser Technol."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1016\/j.solener.2019.02.030","article-title":"A doughnut-shaped Nd:YAG solar laser beam with 4.5 W\/m2 collection efficiency","volume":"182","author":"Vistas","year":"2019","journal-title":"Sol. Energy"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"25107","DOI":"10.1364\/OE.21.025107","article-title":"Solar-Pumped TEM00 Mode Nd:YAG laser","volume":"21","author":"Liang","year":"2013","journal-title":"Opt. Express"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"305","DOI":"10.1016\/j.solmat.2014.12.015","article-title":"Solar-pumped TEM00 mode Nd:YAG laser by a heliostat-Parabolic mirror system","volume":"134","author":"Liang","year":"2015","journal-title":"Sol. Energy Mater. Sol. Cells"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1016\/j.optcom.2015.12.038","article-title":"TEM00 mode Nd:YAG solar laser by side-pumping a grooved rod","volume":"366","author":"Vistas","year":"2016","journal-title":"Opt. Commun."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.optlastec.2017.06.003","article-title":"Stable TEM00-mode Nd:YAG solar laser operation by a twisted fused silica light-guide","volume":"97","author":"Bouadjemine","year":"2017","journal-title":"Opt. Laser Technol."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1059","DOI":"10.1016\/j.solener.2017.07.048","article-title":"Stable solar-pumped TEM00-mode 1064 nm laser emission by a monolithic fused silica twisted light guide","volume":"155","author":"Mehellou","year":"2017","journal-title":"Sol. Energy"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"147","DOI":"10.1016\/j.solmat.2018.12.029","article-title":"Side-pumped continuous-wave Nd:YAG solar laser with 5.4% slope efficiency","volume":"192","author":"Liang","year":"2019","journal-title":"Sol. Energy Mater. Sol. Cells"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1295","DOI":"10.1016\/j.optlastec.2006.06.016","article-title":"The optical properties and laser characteristics of Cr3+ and Nd3+ co-doped Y3Al5O12 ceramics","volume":"39","author":"Yagi","year":"2007","journal-title":"Opt. Laser Technol."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"163795","DOI":"10.1016\/j.ijleo.2019.163795","article-title":"Ce:Nd:YAG continuous-wave solar-pumped laser","volume":"207","author":"Vistas","year":"2020","journal-title":"Optik"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"018001","DOI":"10.1117\/1.JPE.11.018001","article-title":"Ce:Nd:YAG side-pumped solar laser","volume":"11","author":"Vistas","year":"2021","journal-title":"J. Photonics Energy"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"3049","DOI":"10.1364\/OL.40.003049","article-title":"Design and development of a high-power LED-pumped Ce:Nd:YAG laser","volume":"40","author":"Villars","year":"2015","journal-title":"Opt. Lett."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"221908","DOI":"10.1063\/1.3035849","article-title":"Efficient energy transfer for Ce to Nd in Nd\u2215Ce codoped yttrium aluminum garnet","volume":"93","author":"Meng","year":"2008","journal-title":"Appl. Phys. Lett."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"475","DOI":"10.1016\/j.jallcom.2010.07.207","article-title":"Efficient energy transfer between Ce3+ and Nd3+ in cerium codoped Nd: YAG laser quality transparent ceramics","volume":"507","author":"Samuel","year":"2010","journal-title":"J. Alloys Compd."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1223","DOI":"10.1016\/j.optmat.2010.04.003","article-title":"Intense 1064nm emission by the efficient energy transfer from Ce3+ to Nd3+ in Ce\/Nd co-doped YAG transparent ceramics","volume":"32","author":"Li","year":"2010","journal-title":"Opt. Mater."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"118134","DOI":"10.1016\/j.jlumin.2021.118134","article-title":"Growth and optical properties of the Nd, Ce:YAG laser crystal","volume":"236","author":"Guo","year":"2021","journal-title":"J. Lumin."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"127283","DOI":"10.1016\/j.optcom.2021.127283","article-title":"Luminescence sensitization properties of Ce: Nd: YAG materials for solar pumped lasers","volume":"499","author":"Payziyev","year":"2021","journal-title":"Opt. Commun."},{"key":"ref_33","unstructured":"(2012). Standard tables for reference solar spectral irradiances: Direct normal and hemispherical on 37\u00b0 tilted surface (Standard No. ASTM G173-03)."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"688","DOI":"10.1016\/j.optmat.2010.06.005","article-title":"Properties of transparent Ce:YAG ceramic phosphors for white LED","volume":"33","author":"Nishiura","year":"2011","journal-title":"Opt. Mater."},{"key":"ref_35","unstructured":"Prahl, S. (2022, April 05). Nd:YAG\u2014Nd:Y3Al5O12. Available online: https:\/\/omlc.org\/spectra\/lasermedia\/html\/052.html."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"80","DOI":"10.1016\/j.jphotochem.2015.02.009","article-title":"Near-infrared quantum cutting of Ce3+\u2013Nd3+ co-doped Y3Al5O12 crystal for crystalline silicon solar cells","volume":"303","author":"Tai","year":"2015","journal-title":"J. Photochem. Photobiol. A"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"145","DOI":"10.1051\/rphysap:01987002202014500","article-title":"Energy transfer mechanisms between Ce3+ and Nd3+ in YAG: Nd, Ce at low temperature","volume":"22","author":"Mares","year":"1987","journal-title":"Rev. Phys. Appl."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"2300","DOI":"10.1002\/pssc.201200200","article-title":"Energy transfer from Ce to Nd in Y3Al5O12 ceramics","volume":"9","author":"Yamaga","year":"2012","journal-title":"Phys. Status Solidi C"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"663","DOI":"10.1126\/science.283.5402.663","article-title":"Visible Quantum Cutting in LiGdF4:Eu3+ Through Downconversion","volume":"283","author":"Donker","year":"1999","journal-title":"Science"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"3565","DOI":"10.1364\/OL.34.003565","article-title":"Broadband conversion of visible light to near-infrared emission by Ce3+, Yb3+-codoped yttrium aluminum garnet","volume":"34","author":"Liu","year":"2009","journal-title":"Opt. Lett."}],"container-title":["Energies"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1073\/15\/10\/3577\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T23:10:22Z","timestamp":1760137822000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1073\/15\/10\/3577"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,5,13]]},"references-count":40,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2022,5]]}},"alternative-id":["en15103577"],"URL":"https:\/\/doi.org\/10.3390\/en15103577","relation":{},"ISSN":["1996-1073"],"issn-type":[{"value":"1996-1073","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,5,13]]}}}