Background suppression in synthesized pulse waveform by feedback control optimization for flatly broadened supercontinuum generation
Background suppression in synthesized pulse waveform by feedback control optimization for flatly broadened supercontinuum generation
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DOI：
10.1364/oe.21.003001
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发表时间：
2013-02-11
期刊：
影响因子：
3.8
通讯作者：
Kurokawa, Takashi
中科院分区：
文献类型：
--
作者：
Kashiwagi, Ken;Ishizu, Hiroyuki;Kurokawa, Takashi
提出了一种抑制平坦展宽超连续谱合成脉冲背景成分的方法。在频域自适应脉冲整形中，通过结合反馈控制脉冲整形过程中的两个适应度函数，实现了自相关跟踪中脉冲中心与背景电平的26 dB对比度。该脉冲被用作SC泵浦，并且使用组合方案将SC在泵浦波长处的光谱峰抑制了5dB。仿真结果表明，相位谱控制需要在+/-π/100 rad内，以将谱峰抑制在3 dB以下。结果表明，由于失配容限小，需要自适应脉冲整形来改善SC平坦度。(C)2013年美国光学学会
We demonstrate a method of background component suppression of synthesized pulses for flatly broadened supercontinuum (SC) generation. An adaptive pulse shaping in frequency domain achieved a 26 dB contrast between pulse center and background level in auto-correlation trace by combining two fitness functions during feedback-controlled pulse shaping. The pulse was used as a SC pump, and the spectral peak of the SC at the pump wavelength was suppressed by 5 dB using the combination scheme. Simulation results show that the phase spectra control is required to be within +/- pi/100 rad to suppress the spectral peak below 3 dB. The results show that adaptive pulse shaping is required to improve SC flatness due to the small mismatch tolerance. (C) 2013 Optical Society of America