Effects of pumping profiles on the temperature distributions in doubleend pumped solid-state lasers: A comparison study

Jawad, Hind A.; AbdulRazzaq, Mohammed J.; Shibib, Khalid S.

doi:10.30684/etj.v40i2.2278

	Effects of pumping profiles on the temperature distributions in doubleend pumped solid-state lasers: A comparison study
Engineering and Technology Journal
Article 6, Volume 40, Issue 2, February 2022, Pages 343-349 PDF (884.7 K)
Document Type: Research Paper
DOI: 10.30684/etj.v40i2.2278
Authors
Hind A. Jawad¹; Mohammed J. AbdulRazzaq^* ²; Khalid S. Shibib¹
¹Laser and Optoelectronic Engineering Dept, University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq
²Laser and Optoelectronic Engineering Dept, University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.
Abstract
In this work, the effects of pumping profiles on the temperature distributions in solid-state lasers pumped by laser diode from two different end faces were studied. With different pump spot radii of , various exponent factors were examined to evaluate the behavior of temperature distributions due to Gaussian and super-Gaussian profiles. For a Gaussian pumping (n=2), the maximum temperature difference on each rod face was calculated to be 295.5 K and 226 K, respectively, at a total pump power of 92.8 W (46.4 W per face). While at the same pumping power, the temperature decreased as the n exponent increased. A good match was obtained between the proposed model and the previous works listed in the literature.
Highlights
Understanding the thermal behavior of dualend-pumped solid-state lasers. The exponent of the beam profile has asignificant effect on the temperaturedistributions.significant effect on the temperaturedistributions. Monitoring the thermal behavior keeps theperformance of the lasers before beingsubject to damage.performance of the lasers before beingsubject to damage. A theoretical basis for laser cavity design ofdual-end-pumped cylindrical laser rods wasprovided.dual-end-pumped cylindrical laser rods wasprovided.
Keywords
heat load; Laser rod; Pump profile; Super-Gaussian profile

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