Analytical thermal model for end-pumped solid-state lasers

Cini, Luigi and Mackenzie, Jacob (2017) Analytical thermal model for end-pumped solid-state lasers. Applied Physics B: Lasers and Optics, 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.

Text

Cini_Appl_Phys_B_Sept2017_R1_submitted - Accepted Manuscript

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