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arXiv · 2404.19506

High power single crystal KTA optical parametric amplifier for efficient 1.4-3.5 $\mu$m mid-IR radiation generation

Bianka Csanaková·Ondřej Novák·Lukáš Roškot·Jiří Mužík·Martin Smrž·Helena Jelínková·Tomáš Mocek
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Abstract

In this paper, we present a single crystal, KTA (potassium titanyl-arsenate, KTiOAsO$_4$) based picosecond optical parametric amplifier pumped by an in-house built 1030 nm Yb:YAG thin-disk laser, capable of tunability from 1.46 to 3.5 $\mu$m, operating at 90 kHz, with high average power in the signal and idler beams. The highest output power of 8.9 W was reached for the 1750 nm signal beam with 19% conversion efficiency and the respective 2500 nm idler beam power was 6.2 W with 13% efficiency. The highest combined signal and idler mid-IR power was obtained at 17 W at the 2060 nm wavelength degeneracy point.

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Bianka Csanaková, Ondřej Novák, Lukáš Roškot, Jiří Mužík, Martin Smrž, Helena Jelínková, Tomáš Mocek. 2024-04-30. High power single crystal KTA optical parametric amplifier for efficient 1.4-3.5 $\mu$m mid-IR radiation generation. https://doi.org/10.1088/1555-6611%2Fad45db

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