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首页> 外文会议>Fiber lasers XI: technology, systems, and applications >Double-clad large mode area Er-doped fiber for high-energy and high-peak power amplifiers
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Double-clad large mode area Er-doped fiber for high-energy and high-peak power amplifiers

机译：用于高能量和高峰值功率放大器的双包层大模面积掺Er光纤

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摘要

The use of double-clad fibers for short pulses amplification requires high active ions concentration in order to keep the active fiber length short. In the case of Er-doped fibers an increase of concentration leads to a significant drop of efficiency due to Er ions clustering. We have demonstrated through numerical simulation that efficiency of amplifiers based on double-clad P_2O_5-Al_2O_3-SiO_2 (PAS) Er-doped fibers decreases slower with Er-concentration growth if compared with standard Al_2O_3-SiO_2 fibers. In this paper, we present single-mode large-mode-area heavily Er-doped double-clad fiber based on PAS glass matrix for short pulses amplification. The developed PAS fiber has a 36 μm single-mode core and a small signal cladding absorption of 3 dB/m at 980 nm leading to an optimal fiber length in range of 5-8 m depending on the central wavelength. At first, an all-fiber nanosecond MOPA at 1560 nm was built using our PAS fiber as the final amplifier. We obtained 28 W of average output power (efficiency of 25 % with respect to the launched pump power at 976) limited by amplified spontaneous emission. Pulse energy of 1.5 mJ was achieved at pump power level of ～120 W. We believe that it is the first demonstration of mJ-energy level single-mode nanosecond fiber system. Then, direct amplification of 100-fs source was performed using this fiber. We obtained 12 nJ pulse energy and 100 kW of peak power from the fiber which is close to the record value for Er-doped fiber amplifiers.
机译：使用双包层光纤进行短脉冲放大需要高浓度的活性离子，以保持较短的有源光纤长度。在掺Er纤维的情况下，由于Er离子的聚集，浓度的增加导致效率的显着下降。通过数值模拟我们已经证明，与标准Al_2O_3-SiO_2光纤相比，基于双包层P_2O_5-Al_2O_3-SiO_2（PAS）掺Er光纤的放大器的效率随Er浓度的增长而降低。在本文中，我们提出了基于PAS玻璃基质的单模大面积大面积掺Er双包层光纤，用于短脉冲放大。研发的PAS光纤具有36μm单模纤芯和980 nm处3 dB / m的小信号包层吸收，从而根据中心波长在5-8 m范围内具有最佳光纤长度。首先，使用我们的PAS光纤作为最终放大器，构建了1560 nm的全光纤纳秒MOPA。我们获得了28 W的平均输出功率（相对于976的发射泵浦功率为25％的效率），该功率受放大的自发发射限制。在〜120 W的泵浦功率下获得了1.5 mJ的脉冲能量。我们相信这是mJ能级单模纳秒光纤系统的首次演示。然后，使用该光纤进行100-fs源的直接放大。我们从光纤中获得了12 nJ脉冲能量和100 kW的峰值功率，这接近掺Er光纤放大器的记录值。

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  • 会议地点 San Francisco CA(US)
  • 作者

    Leonid V. Kotov; Mikhail M. Bubnov; Denis S. Lipatov; Aleksei N. Guryanov; Sebastien Fevrier; Jerome Lhermite; Eric Cormier; Maxim Yu. Koptev; Elena A. Anashkina; Sergey V. Muraviev; Alexey V. Andrianov; Arkady V. Kim; Mikhail E. Likhachev;

  • 作者单位

    Fiber Optics Research Center RAS, 38 Vavilov Street, Moscow, Russia 119333,Moscow Institute of Physics and Technology, 9 Institutskii per., Dolgoprudny, Russia 141700;

    Fiber Optics Research Center RAS, 38 Vavilov Street, Moscow, Russia 119333;

    Moscow Institute of Physics and Technology, 9 Institutskii per., Dolgoprudny, Russia 141700;

    Institute of Chemistry of High Purity Substances RAS, 49 Tropinin Street, Nizhny Novgorod;

    Russia 603950;

    XLIM, UMR 7252 CNRS - University of Limoges, 123 av. Albert Thomas, 87060 Limoges, France;

    CeLIA, Universite Bordeaux 1, CNRS UMR 5107, 351 Cours de la liberation, 33405 Talence, France;

    CeLIA, Universite Bordeaux 1, CNRS UMR 5107, 351 Cours de la liberation, 33405 Talence, France;

    Institute of Applied Physics RAS, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia;

    Institute of Applied Physics RAS, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia;

    Institute of Applied Physics RAS, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia;

    Institute of Applied Physics RAS, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia;

    Institute of Applied Physics RAS, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia;

    Fiber Optics Research Center RAS, 38 Vavilov Street, Moscow, Russia 119333;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Er-doped fibers; Fiber amplifiers; High power lasers; Pulsed fiber lasers;

    机译：掺光纤光纤放大器大功率激光器；脉冲光纤激光器;

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