Laser development for high average power, high intensity laser applications at the intense laser irradiation laboratory

L A Gizzi^a,b, F Baffigi^a, F Brandi^a, G Cellamare^a,  M Ezzat^a, A Fregosi^a, L Labate^a,b, and D Palla^a

^aIntenser Laser Irradiation Laboratory, INO-CNR, Via Moruzzi, 156124 Pisa, Italy.

^bINFN, Sez. Pisa, Largo B. Pontecorvo, 3-56127 Pisa, Italy

This study details the design and optimization of a high-average-power disk laser amplifer, specifcally focusing on an optimal 6-sided confguration utilizing aTm:Lu₂O₃ ceramic disk. The amplifer is designed for high repetition rates (~1 kHz) and high average power. A semi-analytical numerical model was developed to simulate intensity and power density distributions, considering both absorption and internal reflections. The chosen optimal confguration, employing12 pump modules at 660W, yields an average optical power density that comfortably exceeding the laser requirement while maintain an excellent effciency. Simulations demonstrate excellent homogeneity within the 3mm radius doped region, with intensity fluctuations below ±5%. This work establishes a robust baseline design that meets key criteria for power density, homogeneity, mechanical feasibility, and cost-effectiveness, thereby setting the stage for more in-depth analyses. © Anita Publications. All rights reserved.
Doi: 10.54955/AJP.34.5-6.2025.265-277
Keywords: Free Electron Laser, X-ray laser, coherent FEL.

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Method: Single- anonymous; Screened for Plagiarism? Yes
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References

Total Refs: 28