Fabrication of high-efficiency pump and signal combiner based on a thermally expanded core technique
Fabrication of high-efficiency pump and signal combiner based on a thermally expanded core technique
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基于热膨胀核心技术的高效泵和信号组合器的制造
DOI:
10.1016/j.optlastec.2015.06.009
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发表时间:
2015-12
期刊:
影响因子:
--
通讯作者:
江厚满
中科院分区:
文献类型:
--
作者:
赵柯;常欣祖;陈子伦;王泽锋;江厚满
We have developed a high-efficiency (6+1)×1 pump–signal combiner for high power fiber lasers and amplifiers based on a thermally expanded core technique. The thermally expanded core technique can control the dopant concentration of the signal fiber, which can realize mode field match between the mode field sizes of the signal fiber and the output fiber. Using a thermally expanded core method, signal coupling efficiency is increased from 51% to 94% at the wavelength of 1064 nm. And we experimentally demonstrate that the optimal heating time for our signal fiber is around 30 min at a temperature around 1500°C. At the same time, the pump coupling efficiency ranges from 96% to 99% at 976 nm. The high-efficiency pump and signal combiner can be implemented in many fiber laser or amplifier architectures.
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DOI:
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