基于掺铥全光纤放大器的高平均功率皮秒脉冲和超连续谱产生。

High average power picosecond pulse and supercontinuum generation from a thulium-doped, all-fiber amplifier.

出版信息

Opt Lett. 2013 Oct 15;38(20):4150-3. doi: 10.1364/OL.38.004150.

DOI:10.1364/OL.38.004150

PMID:24321946

Abstract

We demonstrate a high-power, picosecond, thulium-doped, all-fiber master oscillator power amplifier with average power of 120.4 W. The compact fiber oscillator is carefully designed with high repetition rate for the purpose of overcoming the detrimental effects of fiber nonlinearity in the later fiber amplifiers. The pulse duration of 16 ps at 333.75 MHz repetition rate results in a peak power of 22.5 kW in the final fiber power amplifier. To the best of our knowledge, this is the first demonstration of average power exceeding 100 W from an ultrashort pulse laser at 2 μm wavelength. On the other hand, by decreasing the fiber oscillator repetition rate and pulse duration for enhancing the fiber nonlinearity effects, we also demonstrate a high-power supercontinuum source with average power of 36 W from 1.95 μm to beyond 2.4 μm in the final fiber power amplifier.

摘要

我们展示了一种平均功率为 120.4 W 的高功率、皮秒、掺铥全光纤主振荡器功率放大器。紧凑型光纤振荡器经过精心设计，具有高重复率，旨在克服后期光纤放大器中光纤非线性的有害影响。在 333.75 MHz 重复率下，脉冲持续时间为 16 ps，导致最终光纤功率放大器中的峰值功率达到 22.5 kW。据我们所知，这是首次在 2 µm 波长的超短脉冲激光中实现超过 100 W 的平均功率。另一方面，通过降低光纤振荡器的重复率和脉冲持续时间来增强光纤非线性效应，我们还在最终的光纤功率放大器中展示了一种平均功率为 36 W 的高功率超连续谱源，从 1.95 µm 扩展到 2.4 µm 以上。