Abstract We demonstrate metal oxides CuCrO2 exhibit considerable nonlinear saturable absorption property in the near-infrared region, and fabricate typical saturable absorber (SA) by wrapping the CuCrO2 nanoparticles(NPs) into a sodium carboxymethylcellulose (NaCMC) film or polyimide (PI) film separately. These SA films could keep stable exposed to air condition for several months. In the CuCrO2-NaCMC (CuCrO2-PI) Q-switched fiber laser, the pulse repetition rate increases from 10.6 kHz (48.5 kHz) to 24.6 kHz (88.7 kHz) and the pulse duration decreases from 19. 08 μ s (3. 85 μ s ) to 3. 91 μ s (1. 18 μ s ) by adjusting the pump power from 53 mW (82.6 mW) to 188.6 mW (184.6 mW). The results suggest that CuCrO2 could be a promising SA for ultrafast lasers generation.

中文翻译：

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基于CuCrO2纳米颗粒可饱和吸收体的稳定被动调Q掺铒光纤激光器

摘要 我们证明了金属氧化物 CuCrO2 在近红外区域表现出相当大的非线性饱和吸收特性，并通过将 CuCrO2 纳米粒子 (NPs) 分别包裹在羧甲基纤维素钠 (NaCMC) 薄膜或聚酰亚胺 (PI) 薄膜中来制造典型的饱和吸收体 (SA)。 . 这些 SA 薄膜可以在空气条件下保持稳定数月。在CuCrO2-NaCMC (CuCrO2-PI)调Q光纤激光器中，脉冲重复率从10.6 kHz (48.5 kHz)增加到24.6 kHz (88.7 kHz)，脉冲持续时间从19. 08 μ s (3. 85通过将泵浦功率从 53 mW (82.6 mW) 调整到 188.6 mW (184.6 mW)，μ s ) 到 3. 91 μ s (1. 18 μ s )。结果表明，CuCrO2 可能是一种很有前途的超快激光生成 SA。