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Analytical thermal model for end-pumped solid-state lasers

Analytical thermal model for end-pumped solid-state lasers
Analytical thermal model for end-pumped solid-state lasers
Fundamentally power-limited by thermal effects, the design challenge for end-pumped "bulk" solid-state lasers depends upon knowledge of the temperature gradients within the gain medium. We have developed analytical expressions that can be used to model the temperature distribution and thermal-lens power in end-pumped solid-state lasers. Enabled by the inclusion of a temperature-dependent thermal conductivity, applicable from cryogenic to elevated temperatures, typical pumping distributions are explored and the results compared with accepted models. Key insights are gained through
these analytical expressions, such as the dependence of the peak temperature rise in function of the boundary thermal conductance to the heat sink. Our generalised expressions provide simple and time-efficient tools for parametric optimization of the heat distribution in the gain medium based upon the material and pumping constraints.
0946-2171
Cini, Luigi
48bfe3fc-42a3-4a26-827a-8f8218b49289
Mackenzie, Jacob
1d82c826-fdbf-425b-ac04-be43ccf12008
Cini, Luigi
48bfe3fc-42a3-4a26-827a-8f8218b49289
Mackenzie, Jacob
1d82c826-fdbf-425b-ac04-be43ccf12008

Cini, Luigi and Mackenzie, Jacob (2017) Analytical thermal model for end-pumped solid-state lasers. Applied Physics B, 123. (doi:10.1007/s00340-017-6848-y).

Record type: Article

Abstract

Fundamentally power-limited by thermal effects, the design challenge for end-pumped "bulk" solid-state lasers depends upon knowledge of the temperature gradients within the gain medium. We have developed analytical expressions that can be used to model the temperature distribution and thermal-lens power in end-pumped solid-state lasers. Enabled by the inclusion of a temperature-dependent thermal conductivity, applicable from cryogenic to elevated temperatures, typical pumping distributions are explored and the results compared with accepted models. Key insights are gained through
these analytical expressions, such as the dependence of the peak temperature rise in function of the boundary thermal conductance to the heat sink. Our generalised expressions provide simple and time-efficient tools for parametric optimization of the heat distribution in the gain medium based upon the material and pumping constraints.

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Cini_Appl_Phys_B_Sept2017_R1_submitted - Accepted Manuscript
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More information

In preparation date: June 2017
Accepted/In Press date: 21 September 2017
e-pub ahead of print date: 4 November 2017
Published date: December 2017

Identifiers

Local EPrints ID: 412109
URI: https://eprints.soton.ac.uk/id/eprint/412109
ISSN: 0946-2171
PURE UUID: 26bb88a2-66c9-4e3b-adbb-d44bb5fa8523
ORCID for Jacob Mackenzie: ORCID iD orcid.org/0000-0002-3355-6051

Catalogue record

Date deposited: 11 Jul 2017 09:44
Last modified: 14 Mar 2019 05:50

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