Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled Method
Despite their extremely high thermal conductivity and low thermal expansion coefficients, thermal effects in diamond are still observed in high-power diamond Raman lasers, which proposes a challenge to their power scaling. Here, the dynamics of temperature gradient and stress distribution in the dia...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-06-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/6/1572 |
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| author | Zhenxu Bai Zhanpeng Zhang Kun Wang Jia Gao Zhendong Zhang Xuezong Yang Yulei Wang Zhiwei Lu Richard P. Mildren |
| author_facet | Zhenxu Bai Zhanpeng Zhang Kun Wang Jia Gao Zhendong Zhang Xuezong Yang Yulei Wang Zhiwei Lu Richard P. Mildren |
| author_sort | Zhenxu Bai |
| collection | DOAJ |
| description | Despite their extremely high thermal conductivity and low thermal expansion coefficients, thermal effects in diamond are still observed in high-power diamond Raman lasers, which proposes a challenge to their power scaling. Here, the dynamics of temperature gradient and stress distribution in the diamond are numerically simulated under different pump conditions. With a pump radius of 100 μm and an absorption power of up to 200 W (corresponding to the output power in kilowatt level), the establishment period of thermal steady-state in a millimeter diamond is only 50 μs, with the overall thermal-induced deformation of the diamond being less than 2.5 μm. The relationship between the deformation of diamond and the stability of the Raman cavity is also studied. These results provide a method to better optimize the diamond Raman laser performance at output powers up to kilowatt-level. |
| first_indexed | 2024-03-10T10:23:35Z |
| format | Article |
| id | doaj.art-810275bd5f714386a21366b04d23c398 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T10:23:35Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-810275bd5f714386a21366b04d23c3982023-11-22T00:12:35ZengMDPI AGNanomaterials2079-49912021-06-01116157210.3390/nano11061572Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled MethodZhenxu Bai0Zhanpeng Zhang1Kun Wang2Jia Gao3Zhendong Zhang4Xuezong Yang5Yulei Wang6Zhiwei Lu7Richard P. Mildren8Center for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, ChinaSchool of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, ChinaSchool of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, ChinaSchool of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, ChinaHangzhou Institute for Advanced Study, UCAS, Hangzhou 330106, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, ChinaMQ Photonics Research Centre, Department of Physics and Astronomy, Macquarie University, Macquarie Park, NSW 2109, AustraliaDespite their extremely high thermal conductivity and low thermal expansion coefficients, thermal effects in diamond are still observed in high-power diamond Raman lasers, which proposes a challenge to their power scaling. Here, the dynamics of temperature gradient and stress distribution in the diamond are numerically simulated under different pump conditions. With a pump radius of 100 μm and an absorption power of up to 200 W (corresponding to the output power in kilowatt level), the establishment period of thermal steady-state in a millimeter diamond is only 50 μs, with the overall thermal-induced deformation of the diamond being less than 2.5 μm. The relationship between the deformation of diamond and the stability of the Raman cavity is also studied. These results provide a method to better optimize the diamond Raman laser performance at output powers up to kilowatt-level.https://www.mdpi.com/2079-4991/11/6/1572diamondthermal analysishigh-powerRaman laserFVM-FEM |
| spellingShingle | Zhenxu Bai Zhanpeng Zhang Kun Wang Jia Gao Zhendong Zhang Xuezong Yang Yulei Wang Zhiwei Lu Richard P. Mildren Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled Method Nanomaterials diamond thermal analysis high-power Raman laser FVM-FEM |
| title | Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled Method |
| title_full | Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled Method |
| title_fullStr | Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled Method |
| title_full_unstemmed | Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled Method |
| title_short | Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled Method |
| title_sort | comprehensive thermal analysis of diamond in a high power raman cavity based on fvm fem coupled method |
| topic | diamond thermal analysis high-power Raman laser FVM-FEM |
| url | https://www.mdpi.com/2079-4991/11/6/1572 |
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