Combination and Compression of Multiple Pulses With Same or Different Wavelengths

Combination and Compression of Multiple Pulses With Same or Different Wavelengths
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相同或不同波长的多个脉冲的组合和压缩

DOI:
10.1109/jlt.2020.3022604
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发表时间:
2020-12
影响因子:
4.7
通讯作者:
K. Nakkeeran
K. Nakkeeran
中科院分区:
工程技术2区
文献类型:
--
作者:
J. Huang;Qian Li;Z. Jian;P. K. A. Wai;K. Nakkeeran

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我们提出了一个实用的方案来演示两个中心波长相同或不同的脉冲在色散指数递减的非线性光纤中传输时的组合和随后的自相似压缩。为了启动这些过程,使用相位调制器对相同或不同波长的两个升余弦脉冲进行调制,以在光纤的输入端获得相同的啁啾。当通过非线性光纤传输时,这些啁啾脉冲首先合并成单个脉冲,在进一步传输过程中被压缩成单个超短高功率脉冲。与单输入脉冲相比,输出脉冲具有较大的压缩系数、较高的能量比例和峰值功率。我们还报道了五个不同波长的升余弦脉冲的组合和压缩,获得了明显的压缩效果,表明该系统即使在少量输入脉冲的情况下也能很好地工作。该方案为在较短的光纤长度内产生高能量、高质量的高功率超短脉冲提供了一种简单的方法。
We propose a practical scheme to demonstrate the combination and subsequent self-similar compression of two pulses with the same or different central wavelengths while propagating through a nonlinear fiber with exponentially decreasing dispersion. To initiate these processes, two raised cosine pulses with the same or different wavelengths is modulated using a phase modulator to acquire the same chirp at the input of the fiber. While propagating through the nonlinear fiber, these chirped pulses first coalesce into a single pulse and during further propagation get compressed into a single ultrashort high-power pulse. The output pulse possesses a large compression factor, high proportion of energy and peak power compared to a single input pulse. We also report the combination and compression of five raised cosine pulses with different wavelengths to achieve an appreciable compression effect, indicating that this system works well even with a small number of input pulses. The proposed scheme provides a simple way to generate high power ultrashort pulse with high energy and good quality in a short length of fiber.
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