基于薄片增益介质的皮秒激光再生放大器研究

Jing, 董静 Dong; Hantian, 陈涵天 Chen; Hailin, 王海林 Wang; Jia, Xianshi; Guangzhi, 朱广志 Zhu; Kozlov, AlekseiKozlov Aleksei; Xiao, 朱晓 Zhu

doi:10.3788/aos202141.1414003

Cited by 7 publications

(1 citation statement)

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“…However, the optical-to-optical conversion efficiencies of current thin-disk regenerative amplifiers remain below 50% [24][25][26][27][28] , as shown in Table 1. Hence, it is imperative to develop a thin-disk regenerative amplifier with high optical conversion efficiency to meet the stringent demands of ultrafast laser applications effectively.…”

Section: Introductionmentioning

confidence: 99%

High-repetition-rate and High-power Efficient Picosecond Thin-disk Regenerative Amplifier

Xu,

Gao,

Liu

et al. 2023

High Pow Laser Sci Eng

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We present an effective approach to realize a highly efficient, high-power and chirped pulse amplification-free ultrafast ytterbium-doped yttrium aluminum garnet thin-disk regenerative amplifier pumped by a zero-phonon line 969 nm laser diode. The amplifier delivers an output power exceeding 154 W at a pulse repetition rate of 1 MHz with custom-designed 48 pump passes. The exceptional thermal management on the thin disk through high-quality bonding, efficient heat dissipation and a fully locked spectrum collectively contributes to achieving a remarkable optical-to-optical efficiency of 61% and a near-diffraction-limit beam quality with an M 2 factor of 1.06. To the best of our knowledge, this represents the highest conversion efficiency reported in ultrafast thin-disk regenerative amplifiers. Furthermore, the amplifier operates at room temperature and exhibits exceptional stability, with root mean square stability of less than 0.33%. This study significantly represents advances in the field of laser amplification systems, particularly in terms of efficiency and average power. This advantageous combination of high efficiency and diffraction limitation positions the thin-disk regenerative amplifier as a promising solution for a wide range of scientific and industrial applications.

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Section: Introductionmentioning

confidence: 99%