Light Management for Enhancing Optical Gain in a Solar‐Pumped Fiber Laser Employing a Solid‐State Luminescent Solar Concentrator
Optical gain of 8.3 km−1 is obtained in a neodymium‐doped silica fiber under simulated sunlight (intensity = 2.1 kW m−2). The fiber gain medium (length = 50 m) is coiled and attached to a solid‐state luminescent solar concentrator (LSC) disk (diameter = 180 mm). The disk/fiber unit is placed in a ca...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2022-02-01
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| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202100214 |
| _version_ | 1798031251172491264 |
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| author | Taizo Masuda Kai Aoyagi Stephan Dottermusch Ian A. Howard Bryce S. Richards Masamori Endo |
| author_facet | Taizo Masuda Kai Aoyagi Stephan Dottermusch Ian A. Howard Bryce S. Richards Masamori Endo |
| author_sort | Taizo Masuda |
| collection | DOAJ |
| description | Optical gain of 8.3 km−1 is obtained in a neodymium‐doped silica fiber under simulated sunlight (intensity = 2.1 kW m−2). The fiber gain medium (length = 50 m) is coiled and attached to a solid‐state luminescent solar concentrator (LSC) disk (diameter = 180 mm). The disk/fiber unit is placed in a cavity comprising highly reflective (HRM) and dichroic (DM) mirrors to increase the photon confinement by a factor of 2.2 compared with a liquid LSC (also employing HRM/DM). The enhancement is mainly due to the air gap between HRM/DM and LSC, which affords total internal reflection (TIR) in the solid‐state LSC and an ideal boundary condition for the multilayer mirrors. The numerical calculations indicate that an additional 2.2‐times enhancement is achievable with a side wall exhibiting 90% diffuse reflection. This has been experimentally confirmed (1.9‐times optical‐gain enhancement is realized by adding a polytetrafluoroethylene side‐wall reflector). Overall, the solid‐state LSC‐based solar‐pumped laser (SPL) comprising reflective side walls exhibits a gain factor of 4.2, which is superior to its liquid‐state predecessor. Further improvements employing a solid‐state LSC design and fiber optimization will facilitate the market penetration of SPLs. |
| first_indexed | 2024-04-11T19:53:19Z |
| format | Article |
| id | doaj.art-20a3c462de1040739eea7f721a355d48 |
| institution | Directory Open Access Journal |
| issn | 2699-9293 |
| language | English |
| last_indexed | 2024-04-11T19:53:19Z |
| publishDate | 2022-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj.art-20a3c462de1040739eea7f721a355d482022-12-22T04:06:13ZengWiley-VCHAdvanced Photonics Research2699-92932022-02-0132n/an/a10.1002/adpr.202100214Light Management for Enhancing Optical Gain in a Solar‐Pumped Fiber Laser Employing a Solid‐State Luminescent Solar ConcentratorTaizo Masuda0Kai Aoyagi1Stephan Dottermusch2Ian A. Howard3Bryce S. Richards4Masamori Endo5Carbon Neutral development division Toyota Motor Corporation 410-1193 Susono Shizuoka JapanDepartment of Physics Tokai University 259-1292 Hiratsuka Kanagawa JapanInstitute of Microstructure Technology Karlsruhe Institute of Technology 76344 Eggenstein-Leopoldshafen GermanyInstitute of Microstructure Technology Karlsruhe Institute of Technology 76344 Eggenstein-Leopoldshafen GermanyInstitute of Microstructure Technology Karlsruhe Institute of Technology 76344 Eggenstein-Leopoldshafen GermanyDepartment of Physics Tokai University 259-1292 Hiratsuka Kanagawa JapanOptical gain of 8.3 km−1 is obtained in a neodymium‐doped silica fiber under simulated sunlight (intensity = 2.1 kW m−2). The fiber gain medium (length = 50 m) is coiled and attached to a solid‐state luminescent solar concentrator (LSC) disk (diameter = 180 mm). The disk/fiber unit is placed in a cavity comprising highly reflective (HRM) and dichroic (DM) mirrors to increase the photon confinement by a factor of 2.2 compared with a liquid LSC (also employing HRM/DM). The enhancement is mainly due to the air gap between HRM/DM and LSC, which affords total internal reflection (TIR) in the solid‐state LSC and an ideal boundary condition for the multilayer mirrors. The numerical calculations indicate that an additional 2.2‐times enhancement is achievable with a side wall exhibiting 90% diffuse reflection. This has been experimentally confirmed (1.9‐times optical‐gain enhancement is realized by adding a polytetrafluoroethylene side‐wall reflector). Overall, the solid‐state LSC‐based solar‐pumped laser (SPL) comprising reflective side walls exhibits a gain factor of 4.2, which is superior to its liquid‐state predecessor. Further improvements employing a solid‐state LSC design and fiber optimization will facilitate the market penetration of SPLs.https://doi.org/10.1002/adpr.202100214light managementluminescent solar concentratoroptical fibersray tracingsolar-pumped laser |
| spellingShingle | Taizo Masuda Kai Aoyagi Stephan Dottermusch Ian A. Howard Bryce S. Richards Masamori Endo Light Management for Enhancing Optical Gain in a Solar‐Pumped Fiber Laser Employing a Solid‐State Luminescent Solar Concentrator Advanced Photonics Research light management luminescent solar concentrator optical fibers ray tracing solar-pumped laser |
| title | Light Management for Enhancing Optical Gain in a Solar‐Pumped Fiber Laser Employing a Solid‐State Luminescent Solar Concentrator |
| title_full | Light Management for Enhancing Optical Gain in a Solar‐Pumped Fiber Laser Employing a Solid‐State Luminescent Solar Concentrator |
| title_fullStr | Light Management for Enhancing Optical Gain in a Solar‐Pumped Fiber Laser Employing a Solid‐State Luminescent Solar Concentrator |
| title_full_unstemmed | Light Management for Enhancing Optical Gain in a Solar‐Pumped Fiber Laser Employing a Solid‐State Luminescent Solar Concentrator |
| title_short | Light Management for Enhancing Optical Gain in a Solar‐Pumped Fiber Laser Employing a Solid‐State Luminescent Solar Concentrator |
| title_sort | light management for enhancing optical gain in a solar pumped fiber laser employing a solid state luminescent solar concentrator |
| topic | light management luminescent solar concentrator optical fibers ray tracing solar-pumped laser |
| url | https://doi.org/10.1002/adpr.202100214 |
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