Cargando…
The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier
Laser diode pumped solid-state lasers (DPSSLs) have been widely used in many fields, and their thermal effects have attracted more and more attention. The laser diode (LD) side-pumped amplifier, as a key component of DPSSLs, is necessary for effective heat dissipation. In this paper, instead of the...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10004065/ https://www.ncbi.nlm.nih.gov/pubmed/36837999 http://dx.doi.org/10.3390/mi14020299 |
_version_ | 1784904743962804224 |
---|---|
author | Nie, Shuzhen Zhao, Tianzhuo Liu, Xiaolong Qu, Pubo Yang, Yuchuan Wang, Yuheng |
author_facet | Nie, Shuzhen Zhao, Tianzhuo Liu, Xiaolong Qu, Pubo Yang, Yuchuan Wang, Yuheng |
author_sort | Nie, Shuzhen |
collection | PubMed |
description | Laser diode pumped solid-state lasers (DPSSLs) have been widely used in many fields, and their thermal effects have attracted more and more attention. The laser diode (LD) side-pumped amplifier, as a key component of DPSSLs, is necessary for effective heat dissipation. In this paper, instead of the common thermal analysis based only on a crystal rod model, a fluid–structure interaction model including a glass tube, cooling channel, coolant and crystal rod is established in numerical simulation using ANSYS FLUENT for the configuration of an LD array side-pumped laser amplifier. The relationships between cooling layer thickness, coolant velocity and maximum temperature, maximum equivalent stress, inlet pressure and the convective heat transfer coefficient are analyzed. The results show that the maximum temperature (or maximum equivalent stress) decreases with the increase in the coolant velocity; at low velocity, a larger cooling layer thickness with more coolant is not conductive enough for improved heat dissipation of the crystal rod; at high velocity, when the cooling layer thickness is above or below 1.5 mm, the influence of the cooling layer thickness on the maximum temperature can be ignored; and the effect of the cooling layer thickness on the maximum equivalent stress at high velocity is not very significant. The comprehensive influence of various factors should be fully considered in the design process, and this study provides an important reference for the design and optimization of a laser amplifier and DPSSL system. |
format | Online Article Text |
id | pubmed-10004065 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-100040652023-03-11 The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier Nie, Shuzhen Zhao, Tianzhuo Liu, Xiaolong Qu, Pubo Yang, Yuchuan Wang, Yuheng Micromachines (Basel) Article Laser diode pumped solid-state lasers (DPSSLs) have been widely used in many fields, and their thermal effects have attracted more and more attention. The laser diode (LD) side-pumped amplifier, as a key component of DPSSLs, is necessary for effective heat dissipation. In this paper, instead of the common thermal analysis based only on a crystal rod model, a fluid–structure interaction model including a glass tube, cooling channel, coolant and crystal rod is established in numerical simulation using ANSYS FLUENT for the configuration of an LD array side-pumped laser amplifier. The relationships between cooling layer thickness, coolant velocity and maximum temperature, maximum equivalent stress, inlet pressure and the convective heat transfer coefficient are analyzed. The results show that the maximum temperature (or maximum equivalent stress) decreases with the increase in the coolant velocity; at low velocity, a larger cooling layer thickness with more coolant is not conductive enough for improved heat dissipation of the crystal rod; at high velocity, when the cooling layer thickness is above or below 1.5 mm, the influence of the cooling layer thickness on the maximum temperature can be ignored; and the effect of the cooling layer thickness on the maximum equivalent stress at high velocity is not very significant. The comprehensive influence of various factors should be fully considered in the design process, and this study provides an important reference for the design and optimization of a laser amplifier and DPSSL system. MDPI 2023-01-23 /pmc/articles/PMC10004065/ /pubmed/36837999 http://dx.doi.org/10.3390/mi14020299 Text en © 2023 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 Nie, Shuzhen Zhao, Tianzhuo Liu, Xiaolong Qu, Pubo Yang, Yuchuan Wang, Yuheng The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier |
title | The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier |
title_full | The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier |
title_fullStr | The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier |
title_full_unstemmed | The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier |
title_short | The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier |
title_sort | effect of cooling layer thickness and coolant velocity on crystal thermodynamic properties in a laser amplifier |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10004065/ https://www.ncbi.nlm.nih.gov/pubmed/36837999 http://dx.doi.org/10.3390/mi14020299 |
work_keys_str_mv | AT nieshuzhen theeffectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT zhaotianzhuo theeffectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT liuxiaolong theeffectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT qupubo theeffectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT yangyuchuan theeffectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT wangyuheng theeffectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT nieshuzhen effectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT zhaotianzhuo effectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT liuxiaolong effectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT qupubo effectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT yangyuchuan effectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier AT wangyuheng effectofcoolinglayerthicknessandcoolantvelocityoncrystalthermodynamicpropertiesinalaseramplifier |