136.9 W Acousto-Optically Q-Switched 2 μm Thin-Disk Laser

IF 3.9 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Photonics Research Pub Date : 2026-04-15 DOI:10.1002/adpr.202500290

Qiongwen Zhang, Pengyuan Wang, Ying Chen, Rui Liu, Fei Teng, Qipeng Lv, Xiang Li, Longhui Dai, Faquan Gong, Songwen Deng, Gang Li, Yuqi Jin

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Abstract

We demonstrate an acousto-optic (AO) Q-switching Ho:YAG thin disk laser (TDL) at 2 μm with Tm-fiber laser pumping. Under continuous-wave operation, the laser delivered a maximum output power of 216.4 W with an optical-to-optical efficiency of 43.28 $%$ , which constitutes the highest power reported for 2 μm TDLs. Under AO Q-switching, we obtained a maximum average output power of 136.9 W at a repetition rate of 20 kHz, while a maximum pulse energy of 30 mJ at 1 kHz highlighted the strong potential of Ho:YAG TDLs for high-energy applications. These results further indicate their potential as efficient pump sources for ZnGeP₂ optical parametric oscillators (ZGP-OPOs), enabling effective wavelength extension into the mid- and far-infrared spectral region.

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136.9 W声光调q 2 μm薄板激光器

研究了一种2 μm波长声光调q Ho:YAG薄板激光器（TDL）。在连续波工作下，激光器的最大输出功率为216.4 W，光效率为43.28%，这是目前报道的2 μm tdl的最高功率。在AO调q条件下，在重复频率为20 kHz时，我们获得了136.9 W的最大平均输出功率，而在1 kHz时，我们获得了30 mJ的最大脉冲能量，这突出了Ho:YAG tdl在高能应用中的强大潜力。这些结果进一步表明了它们作为ZnGeP2光参量振荡器（ZGP-OPOs）的高效泵浦源的潜力，使波长有效扩展到中远红外光谱区域。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Advanced Photonics Research

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2.70%

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