https://orcid.org/0000-0002-4406-4108
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Abstract
One of the major drawbacks in lamp-pumped laser development resides in its low electrical input-to-TEM00 mode laser conversion efficiency. Here is proposed a four-lamp/four-rod solid-state laser pumping concept. Four Nd:YAG rods were pumped by four 1.0 kW input power Krypton CW arc lamps within a quadruple ellipse pump cavity, ensuring a good absorbed pump power distribution within each rod. The laser design parameters were optimized in Zemax® and LASCAD® software to maximize the TEM00 mode laser power. 35.80 W TEM00 mode total laser power was numerically calculated, corresponding to 0.90% electrical input-to-TEM00 mode laser conversion efficiency and 2.25 times improvement over that of the state-of-the-art lamp-pumped laser. For the extraction of a single TEM00 mode laser beam, a novel laser cavity was presented. 25.94 W laser beam brightness figure of merit was numerically calculated, corresponding to a 4-fold increase over that from each of the four TEM00 mode laser beams.
Acknowledgment
The fellowship grants SFRH/BD/145322/2019, SFRH/BPD/125116/2016, PD/BD/142827/2018, PD/BD/12867/2016, and the contract CEECIND/03081/2017 for Miguel Catela, Cláudia R. Vistas, Dário Garcia, Bruno D. Tibúrcio, and J. Almeida, respectively, are also acknowledged.
Disclosure statement
No potential conflict of interest was reported by the author(s).