100-W 430-ps all-fiber picosecond laser by using 10-/130-μm ytterbium-doped double-clad fiber and its application in SCS
100-W 430-ps all-fiber picosecond laser by using 10-/130-μm ytterbium-doped double-clad fiber and its application in SCS
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DOI：
10.1007/s00340-014-5993-9
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Junjie Chi;Pingxue Li;Boxing Liang;Yifei Yao;Haowei Hu;Guangju Zhang;Mengmeng Zhang;Chunmei Ma
中科院分区：
文献类型：
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作者：
Junjie Chi;Pingxue Li;Boxing Liang;Yifei Yao;Haowei Hu;Guangju Zhang;Mengmeng Zhang;Chunmei Ma
报道了在10 μ m芯双包层光纤中产生100 W皮秒脉冲激光的理论和实验研究。首先，我们基于四能级速率方程和非线性薛定谔方程进行了理论模拟。在理论模拟中，我们证明了在10 μ m芯掺杂光纤中可以产生100 W的皮秒激光，并发现掺杂光纤的长度对输出激光脉冲的光谱特性有很大的影响。然后，在理论分析的基础上，引入主振荡功率放大器技术进行了实验研究。我们做了四组对比实验，使用不同长度的掺杂光纤：6，6.5，7和8米。结果表明，在10 μm纤芯、6.5m长的光纤中获得了100 W的平均输出功率。其重复频率为22.7 MHz，中心波长为1,040 nm，脉冲宽度约为430 ps。此外，我们利用皮秒激光泵浦非线性光子晶体光纤（PCF）产生超连续谱光源。在550 ~ 1650 nm和500 ~ 1650 nm的光谱展宽范围内，两种光子晶体光纤分别获得了30和36 W的平均输出功率。
We report on a theoretical and experimental study on 100-W picosecond pulsed laser produced in 10-μm-core double-clad fiber. Firstly, we make a theoretical simulation based on four-level rate equation and nonlinear Schrödinger equation. In the theoretical simulation, we prove that 100-W picosecond laser can be produced in 10-μm-core doped fiber and find that the length of the doped fiber has a great impact on the spectrum characteristics of the output laser pulse. Then, based on the theoretical analysis results, we make an experimental study introducing Master Oscillator Power Amplifier technology. We do four sets of comparative experiments using different lengths of the doped fiber: 6, 6.5, 7 and 8 m. As a result, 100 W of average output power is obtained in 10-μm fiber core with 6.5 m length. Its repetition rate is 22.7 MHz, its central wavelength is 1,040 nm, and its pulse width is about 430 ps. Moreover, we use the picosecond laser source to pump the nonlinear photonic crystal fiber (PCF) to produce super-continuum source. With two different kinds of PCF, 30 and 36 W average output power are obtained corresponding to spectral broadening range from 550 to 1,650 nm and from 500 to 1,650 nm, respectively.