Quasi-automatic phase-control technique for chirp compensation of pulses with over-one-octave bandwidth-generation of few- to mono-cycle optical pulses
Quasi-automatic phase-control technique for chirp compensation of pulses with over-one-octave bandwidth-generation of few- to mono-cycle optical pulses
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DOI：
10.1109/jstqe.2006.871961
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发表时间：
2006-05
影响因子：
4.9
通讯作者：
Mikio Yamashita;K. Yamane;R. Morita
中科院分区：
文献类型：
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作者：
Mikio Yamashita;K. Yamane;R. Morita
本文介绍了我们的自识别型计算机控制光谱相位补偿器（SRCSC），它由一个带有空间光调制器（SLM）的高精度相位操纵器、一个使用改进的光谱相位干涉直接电场重建的高灵敏度相位表征器（M-SPIDER）以及一台在立即反馈（FB）模式下运行的相位分析和SLM控制计算机组成。 SRCSC 在各种复杂光谱相位的自适应补偿中的应用，例如弱强度的非线性啁啾脉冲、感应相位调制脉冲、光子晶体光纤 (PCF) 输出脉冲和超过 1 倍频程带宽内超过 500 rad 相位变化的非线性啁啾脉冲，表明 SRCSC 对于补偿任意非线性啁啾非常有用，因此使我们能够生成准单周期变换限制 (TL)持续时间为 2.8 fs 的脉冲。据我们所知，这个 1.5 周期脉冲是在可见光到近红外区域具有清晰时间分布的最短单脉冲。
This paper introduces our self-recognition type of the computer-controlled spectral phase compensator (SRCSC), which consists of a greatly accurate phase manipulator with a spatial light modulator (SLM), a highly sensitive phase characterizer using a modified spectral phase interferometry for direct electric field reconstruction (M-SPIDER), and a computer for phase analysis and SLM control operating in the immediate feedback (FB) mode. The application of the SRCSC to adaptive compensation of various kinds of complicated spectral phases such as nonlinear chirped pulses with a weak intensity, induced-phase modulated pulses, photonic-crystal-fiber (PCF) output pulses, and nonlinear chirped pulses exceeding a 500-rad phase variation over-one-octave bandwidth demonstrated that the SRCSC is significantly useful for compensation of arbitrary nonlinear chirp and hence enables us to generate quasi-monocycle transform-limited (TL) pulses with a 2.8-fs duration. To the best of our knowledge, this 1.5-cycle pulse is the shortest single pulse with a clean temporal profile in the visible to near-infrared region.