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Keywords

heat load, Laser rod, Pump profile, Super-Gaussian profile

Document Type

Research Paper

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.

References

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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.

DOI

10.30684/etj.v40i2.2278

First Page

343

Last Page

349

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