Ring-shaped microstructured chalcogenide optical fiber for octave-spanning flat-top mid-infrared supercontinuum generation
Ring-shaped microstructured chalcogenide optical fiber for octave-spanning flat-top mid-infrared supercontinuum generation
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用于倍频程平顶中红外超连续谱产生的环形微结构硫族化物光纤
DOI：
10.1364/ao.391564
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发表时间：
2020-06
期刊：
影响因子：
1.9
通讯作者：
Zheng Shupei
中科院分区：
文献类型：
--
作者：
Huang Chunlei;Bi Wanjun;Zheng Biao;Zhang Cheng;Wang Jun;Zheng Shupei
在光纤中产生宽带平顶中红外超连续谱（SC）在许多应用中具有重要意义。在这里，我们设计了一种由六边形环组成的微结构硫系光纤。通过对光纤结构参数的优化，证明了该光纤具有全正态色散特性。数值模拟结果表明，当泵浦波长为5 μm、脉冲宽度为150 fs时，产生的强度大于-3dB的超连续谱范围为3450 ~ 8015 nm，对应于一个以上倍频程。通过求解广义非线性薛定谔方程，研究了泵浦光波长、峰值功率和脉宽等泵浦脉冲参数对光谱展宽的影响。结果表明，为了获得足够平坦的SC谱，最佳泵浦波长为5 μm左右。高峰功率和短持续时间增强了频谱平坦度和带宽。我们还研究了在3 µm泵浦的优化光纤中的SC产生。产生的SC在−6dB水平覆盖从1970到4370 nm的波长，对应于多个倍频程。
Broadband flat-top mid-infrared supercontinuum (SC) generation in optical fibers is of great interest for many applications. Here, we designed a microstructured chalcogenide optical fiber composed of hexagonal rings. By optimizing the structure parameters, it is demonstrated that the fiber is characterized by an all-normal dispersion profile. Numerical simulation results show that the generated SC spectrum with intensity above −3dB ranges from 3450 nm to 8015 nm corresponding to more than one octave when the fiber is pumped with 150 fs pulses at 5 µm. By solving the generalized nonlinear Schrodinger equation, we investigated the influence of pump pulse parameters including pump wavelength, peak power, and pulse duration on the spectral broadening. The results turn out that the optimal pump wavelength is around 5 µm for obtaining SC spectra with sufficient flatness. High peak power and short duration enhance the spectral flatness and bandwidth. We also investigated SC generation in the optimized fiber pumped at 3 µm. The generated SC at −6dB level covers wavelength from 1970 to 4370 nm, corresponding to more than one octave.
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用于亚皮秒区域倍频程相干超连续谱的星号形微结构光纤
影响因子：
3.6
作者：
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影响因子：
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作者：
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通讯作者：
P. Ma;D. Choi;Yi Yu;X. Gai;Zhiyong Yang;S. Debbarma;S. Madden;B. Luther-Davies
影响因子：
3
作者：
Erlei Wang;Jia Li;Jin Li;Quan Cheng;Xiaodong Zhou;Haiming Jiang
通讯作者：
Erlei Wang;Jia Li;Jin Li;Quan Cheng;Xiaodong Zhou;Haiming Jiang
DOI：
10.1364/josab.27.000550
发表时间：
2010-03-01
影响因子：
1.9
作者：
Heidt, Alexander M.
通讯作者：
Heidt, Alexander M.