Amplification of a radially polarized beam in a thermally guiding ytterbium-doped fiber rod
Amplification of a radially polarized beam in a thermally guiding ytterbium-doped fiber rod
复制标题
热导掺镱光纤棒中径向偏振光束的放大
DOI：
10.1007/s00340-019-7276-y
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Jefferson-Brain T
中科院分区：
文献类型：
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作者：
Jefferson-Brain T
研究了Yb:YAG种子激光器在1030nm波长的径向偏振光束在超大芯三包层掺镱光纤中作为热导光纤棒放大器的放大效果。该放大器的最大输出功率为10.7 W（受可用泵浦功率限制），相应的单通增益为6.4 dB，而在整个泵浦功率范围内，径向偏振纯度保持不变，偏振消光比为100:1。放大后的输出光束呈现出典型的环形强度分布，光束畸变可以忽略不计，测量到的光束传播系数（M2）为2.1±0.1。一个简化模型的传播径向偏振光在热导光纤棒提供深入了解潜在的设计原则，并建立一个策略，以缩放输出功率。考虑了该方法的功率缩放限制。
Amplification of a radially polarized beam from an Yb:YAG seed laser at 1030 nm in a very-large-core triple-clad ytterbium-doped fiber configured as a thermally guiding fiber rod amplifier is demonstrated. The amplifier yielded a maximum output power of 10.7 W (limited by available pump power) with corresponding single-pass gain of 6.4 dB, while the radial polarization purity was maintained over the full range of pump power with a measured polarization extinction ratio of 100:1. The amplified output beam displayed the characteristic donut-shaped intensity profile with negligible beam distortion as evidenced by a measured beam propagation factor (M2) of 2.1 ± 0.1. A simplified model for propagation of a radially polarized beam in a thermally guided fiber rod is developed to provide insight into the underlying design principles and to establish a strategy for scaling output power. The power scaling limitations of this approach are considered.
热导掺镱光纤棒放大器和激光器
DOI：
10.1007/s00340-018-7126-3
发表时间：
2019
期刊：
Applied Physics B
影响因子：
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作者：
C. R. Smith;N. Simakov;A. Hemming;W. Clarkson
通讯作者：
W. Clarkson
Yb:YAG 薄板中径向偏振光束的放大
DOI：
10.1007/s00340-017-6802-z
发表时间：
2017
期刊：
Applied Physics. B, Lasers and Optics
影响因子：
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作者：
C. Smith;S. Beecher;J. Mackenzie;W. Clarkson
通讯作者：
W. Clarkson