Engineering and Technology Journal

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

Document Type : Research Paper

Authors

1 Laser and Optoelectronic Engineering Dept, University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq

2 Laser 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.          

Graphical Abstract

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

References
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Engineering and Technology Journal
Volume 40, Issue 2
Electrical Engineering
, 16 articles
February 2022
Page 343-349
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