2026-10-12T02:47:24Z https://www.scidb.cn/oai

10.57760/sciencedb.31892 2025-11-19T18:21:35Z

2025-11-19 Joule-level, 20 ns Cr-Tm-Ho:YAG Master Oscillator Power Amplifier System doi:10.57760/sciencedb.31892 en We report on a compact, flash-lamp-pumped Cr-Tm-Ho:YAG (CTH:YAG) master oscillator power amplifier (MOPA) system operating at room temperature. The actively Q-switched oscillator produces 20 ns seed pulses at 2087 nm with an energy of 265 mJ. After a two-stage amplification, the system delivers a maximum output energy of 1.24 J, while maintaining the 20 ns pulse duration. To the best of our knowledge, this work represents the first demonstration of a joule-level, nanosecond CTH:YAG amplifier system, achieving the highest single-pulse energy yet reported from such a configuration. These results establish flash-lamp-pumped CTH:YAG as a viable architecture for developing high-energy, cost-effective 2 µm laser sources. 2 um; laser; MOPA 郭文昊 Zebiao Gan Qixuan Fan Nadila Paerhati Xiaoyan Liang RESTRICTED dataset Science Data Bank