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Analytical thermal model for end-pumped solid-state lasers.

L Cini1,2, J I Mackenzie2

  • 11Dipartimento di Fisica, Università di Pisa, Largo B. Pontecorvo 3, Pisa, 56127 Italy.

Applied Physics. B, Lasers and Optics
|January 31, 2020
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Summary
This summary is machine-generated.

We developed analytical models to predict temperature distribution and thermal lensing in solid-state lasers. These tools help optimize laser design by understanding heat management in the gain medium.

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Thermal Engineering

Background:

  • Solid-state laser design is fundamentally limited by thermal effects.
  • Accurate modeling of temperature gradients within the gain medium is crucial for performance optimization.

Purpose of the Study:

  • To develop analytical expressions for modeling temperature distribution and thermal-lens power in end-pumped solid-state lasers.
  • To provide efficient tools for parametric optimization of heat distribution in laser gain media.

Main Methods:

  • Development of generalized analytical expressions for temperature distribution.
  • Inclusion of temperature-dependent thermal conductivity for broad applicability (cryogenic to elevated temperatures).
  • Exploration of typical pumping distributions and comparison with existing models.

Main Results:

  • Analytical expressions accurately model temperature gradients and thermal lensing.
  • Demonstrated dependence of peak temperature rise on boundary thermal conductance to the heat sink.
  • Validated the model's applicability across a wide temperature range.

Conclusions:

  • The developed analytical expressions offer simple, time-efficient tools for laser design.
  • Parametric optimization of heat distribution is achievable based on material and pumping constraints.
  • Improved understanding of thermal effects enables enhanced performance in end-pumped solid-state lasers.