泵浦波长优化增强飞秒光纤放大器的性能

IF 1.8 4区 物理与天体物理 Q3 OPTICS
Sijia Wang, Peng Qin, Huibin Wang
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引用次数: 0

摘要

我们展示了一种基于泵浦波长优化的加速自相似脉冲演化和降低自由运行飞秒光纤放大器强度噪声的有效方案。实验和仿真表明,脉冲自相似放大对种子信号功率和泵浦波长波动的容差增强,最佳915 nm泵浦波长压缩脉冲质量提高20%,放大器均方根(RMS)相对强度噪声(RIN)降低31%(1.5 kHz至5 MHz),即使泵浦激光二极管(LD)RIN比976的情况高4倍以上 纳米~50 fs变换限制脉冲是用~0.03%的放大器RMS RIN产生的。所提出的方案可以降低低噪声自相似飞秒光纤放大器对种子振荡器的功率稳定性和泵浦LD的热控制的要求,从而为飞秒激光在太空中的各种基于卫星的高精度应用显示出潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance Enhancements of Femtosecond Fiber Amplifier by Pump Wavelength Optimization
We demonstrate an efficient scheme to accelerate the self-similar pulse evolution and reduce the intensity noise of a free-running femtosecond fiber amplifier based on the pump wavelength optimization. Experiments and simulations indicate the enhanced tolerances of the pulse self-similar amplification to the seed signal power and pump wavelength fluctuations, with the optimum 915 nm pump wavelength. ∼20% increase in the compressed pulse quality and ∼31% reduction in the amplifier root-mean-square (RMS) relative intensity noise (RIN) (1.5 kHz to 5 MHz) have been observed, even with a more than 4 times higher pump laser diode (LD) RIN than the case of 976 nm. ∼50 fs transform-limited pulses are generated with the ∼0.03% amplifier RMS RIN. The proposed scheme can lower the requirements of low-noise self-similar femtosecond fiber amplifiers on the power stability of the seed oscillator and the thermal control of the pump LD, thus denoting potentials for the various satellite-based high-precision applications of femtosecond laser in space.
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来源期刊
International Journal of Optics
International Journal of Optics Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
3.40
自引率
5.90%
发文量
28
审稿时长
13 weeks
期刊介绍: International Journal of Optics publishes papers on the nature of light, its properties and behaviours, and its interaction with matter. The journal considers both fundamental and highly applied studies, especially those that promise technological solutions for the next generation of systems and devices. As well as original research, International Journal of Optics also publishes focused review articles that examine the state of the art, identify emerging trends, and suggest future directions for developing fields.
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