Analysis of Thermal Effects within Cylindrical Shape Solid-State Laser Rod

Abstract:

In this work, a temperature-dependent analytical model was modified to predict the thermal effects of diode laser double–end-pumped cylindrical laser rod under Gaussian pump beam distribution. Heat load and temperature distribution were analyzed using the Kirchhoff integral transform method. Results show that a maximum temperature difference of approximately 69.61 K was obtained on each side face of the laser rod at a maximum power of 40 W (equally divided on each face). The total thermal focal length of approximately 34.64 mm was calculated under the Gaussian pumping profile. The finite element method code incorporated with well-verified software was used to numerically verify the obtained results, where the analytical and numerical results are highly matched. The results reveal that the total thermal focal length produced in a double–end-pumped geometry is two times less than that obtained from a single-end-pumped geometry.

• Periodical: Materials Science Forum (Volume 1002)
• Pages: 264-272
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1002.264
• Online since: July 2020
• Authors: Mohammed Jalal Abdul Razzaq*, Kadhim A. Hubeatir
• Keywords: Heat Conduction, Laser Materials, Lasers, Numerical Simulation

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