论文标题
有效提取高脉冲能从部分淬灭的高度ER3+掺杂纤维放大器中
Efficient extraction of high pulse energy from partly quenched highly Er3+-doped fiber amplifiers
论文作者
论文摘要
我们证明了从掺杂的Erbium掺杂的铝硅酸盐纤维放大器中有效地提取脉冲能量。这具有较高的Erbium浓度，它允许具有减少非线性畸变的短装置，但也会导致部分淬火，因此即使纤维仍然能够放大，也会导致明显的不饱和吸收。尽管淬灭会降低平均功率效率，但脉搏能保持很高，我们的结果表明，短脉冲的结果越来越有希望。此外，与未淬灭的纤维不同，转化效率以低重复速率提高，我们将其归因于较小的相对能量损失，以较高的脉冲能量在较高的脉冲能量下。短（2.6 m）覆层式倾斜的部分淬火ER掺杂纤维，估计为95 dB/m 1530-nm峰值吸收和饱和能估计为85μJ，当用0.2-μs，23-μj脉冲播种时，达到了0.8 MJ的输出能。因此，根据我们的结果，脉冲可以在短的高度掺杂纤维中扩增至高能量
We demonstrate efficient pulse-energy extraction from a partly-quenched erbium-doped aluminosilicate fiber amplifier. This has a high erbium-concentration, which allows for short devices with reduced nonlinear distortions, but which also results in partial quenching and thus significant unsaturable absorption, even though the fiber is still able to amplify. Although the quenching degrades the average-power efficiency, the pulse energy remains high, and our results point to an increasingly promising outcome for short pulses. Furthermore, unlike unquenched fibers, the conversion efficiency improves at low repetition rates, which we attribute to smaller relative energy loss to quenched ions at higher pulse energy. A short (2.6 m) cladding-pumped partly-quenched Er-doped-fiber with 95-dB/m 1530-nm peak absorption and saturation energy estimated to 85 μJ, reached 0.8 mJ of output energy when seeded by 0.2-μs, 23-μJ pulses. Thus, according to our results, pulses can be amplified to high energy in short highly-Er-doped fibers designed to reduce nonlinear distortions, at the expense of average-power efficiency
