Pulsed cladding-pumped large mode area fiber Raman amplifier

Pulsed cladding-pumped large mode area fiber Raman amplifier
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脉冲包层泵浦大模场光纤拉曼放大器

DOI:
10.1117/12.845073
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发表时间:
2010
期刊:
--
影响因子:
--
通讯作者:
Ji J
Ji J
中科院分区:
--
文献类型:
--
作者:
Ji J

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包层泵浦光纤拉曼器件由于其在任意波长的功率缩放和通过多模光束的光束净化输出的良好光束质量的潜力而成为有吸引力的激光源解决方案。到目前为止,由于达到受激拉曼散射阈值所需的强度,演示仅限于具有相对小的内包层和小芯的设备。然而,小的内包层尺寸限制使用相对高亮度的泵浦源。此外,内核尺寸也限制了功率的可扩展性,因为较小的内核具有较小的损伤阈值。在此,我们首次提出了一种基于大模场光纤的脉冲包层泵浦光纤拉曼放大器,该光纤的芯径为20 μm,数值孔径为0.06,内包层直径为50 μm,数值孔径为0.2。与这些光纤尺寸,我们表明,它是可以有效地将泵到第一斯托克斯没有不希望的高阶拉曼散射,只要光纤长度匹配的泵浦功率。使用1064 nm的脉冲泵浦源,我们获得了2.15 kW的输出峰值功率为2.8 kW的发射泵浦峰值功率在单程放大器配置。输出光束在一阶斯托克斯处的M2参数为1.69。
Cladding-pumped fiber Raman devices are becoming an attractive laser source solution thanks to their potential for power-scaling at arbitrary wavelength and good beam quality output through the beam clean-up of multimode beams. To date, demonstrations have been limited to devices with relatively small inner claddings and small cores because of the intensity required to reach the stimulated Raman scattering threshold. However, the small inner cladding dimension constrains to use relatively high-brightness pump sources. Furthermore, the core dimension also restricts the power scalability because of the smaller damage threshold in smaller core. Here, for the first time, we demonstrate a pulsed cladding-pumped fiber Raman amplifier based on a large mode area fiber with a 20 μm diameter, 0.06 NA, core and a 50 μm diameter, 0.2 NA, inner cladding. With these fiber dimensions, we show that it is possible to efficiently convert the pump into the 1st Stokes without undesired higher-order Raman scattering, provided that the fiber length is matched to the pump power. Using a 1064 nm, pulsed pump source we obtained a 2.15 kW output peak power for 2.8 kW of launched pump peak power in a single pass amplifier configuration. The M2parameter of the output beam at 1st Stokes is measured to be 1.69.
包层泵浦连续波拉曼光纤激光器
DOI: --
发表时间: 2003
期刊: Conference on Lasers and Electro-Optics (CLEO)
影响因子: --
作者:
J. Jang;Y. Jeong;J. Sahu;M. Ibsen;C. Codemard;R. Selvas;D. Hanna;J. Nilsson
通讯作者: J. Nilsson
高亮度 210 μJ 脉冲拉曼光纤源
DOI: --
发表时间: 2008
期刊: 2008 Conference on Lasers and Electro-Optics and 2008 Conference on Quantum Electronics and Laser Science
影响因子: --
作者:
A. Shirakawa;C. Codemard;J. Ji;K. Chen;A. Malinowski;D. Richardson;J. Sahu;J. Nilsson
通讯作者: J. Nilsson
DOI: 10.1364/oaa.2002.pd2
发表时间: 2002-07
期刊: --
影响因子: --
作者:
J. Nilsson;J. Sahu;J. Jang;R. Selvas;A. Grudinin
通讯作者: J. Nilsson;J. Sahu;J. Jang;R. Selvas;A. Grudinin
1660 nm 高亮度、脉冲、包层泵浦拉曼光纤源
DOI: --
发表时间: 2007
期刊: Conference on Lasers and Electro-Optics
影响因子: --
作者:
C. Codemard;J. Sahu;J. Nilsson
通讯作者: J. Nilsson
用于高增益、高能量单级放大的包层泵浦拉曼光纤放大器
DOI: --
发表时间: 2005
期刊: OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005.
影响因子: --
作者:
C. Codemard;J. Sahu;J. Nilsson
通讯作者: J. Nilsson