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...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8232721/ https://www.ncbi.nlm.nih.gov/pubmed/34203840 http://dx.doi.org/10.3390/nano11061572 |
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author | Bai, Zhenxu Zhang, Zhanpeng Wang, Kun Gao, Jia Zhang, Zhendong Yang, Xuezong Wang, Yulei Lu, Zhiwei Mildren, Richard P. |
author_facet | Bai, Zhenxu Zhang, Zhanpeng Wang, Kun Gao, Jia Zhang, Zhendong Yang, Xuezong Wang, Yulei Lu, Zhiwei Mildren, Richard P. |
author_sort | Bai, Zhenxu |
collection | PubMed |
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. |
format | Online Article Text |
id | pubmed-8232721 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-82327212021-06-26 Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled Method Bai, Zhenxu Zhang, Zhanpeng Wang, Kun Gao, Jia Zhang, Zhendong Yang, Xuezong Wang, Yulei Lu, Zhiwei Mildren, Richard P. Nanomaterials (Basel) Article 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. MDPI 2021-06-15 /pmc/articles/PMC8232721/ /pubmed/34203840 http://dx.doi.org/10.3390/nano11061572 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Bai, Zhenxu Zhang, Zhanpeng Wang, Kun Gao, Jia Zhang, Zhendong Yang, Xuezong Wang, Yulei Lu, Zhiwei Mildren, Richard P. Comprehensive Thermal Analysis of Diamond in a High-Power Raman Cavity Based on FVM-FEM Coupled Method |
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 | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8232721/ https://www.ncbi.nlm.nih.gov/pubmed/34203840 http://dx.doi.org/10.3390/nano11061572 |
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