论文标题
高时间对比度非线性脉冲压缩的双通行多板连续体
Double-pass multiple-plate continuum for high temporal contrast nonlinear pulse compression
论文作者
论文摘要
我们为非线性脉冲压缩提出了一个新的架构，双通板多板连续体（DPMPC）。除了较小的占地面积外，双通构型的设计旨在实现实质性的带宽扩展，而不会产生明显的高阶分散体，从而改善了只有在二次光谱阶段才能补偿传统的单频几何形状的时间对比度。在我们的概念验证实验中，基于YB的激光脉冲187〜 $μ$ J，190-FS YB的激光脉冲被压缩到20 〜fs，使用DPMPC，具有高吞吐量（75％），高颗粒比（0.76）和出色的束均匀性。随后产生的八度跨度光谱表现出明显的蓝色尾巴，与由单个频繁的脉冲驱动的光谱相比。
We propose a new architecture, double-pass multiple-plate continuum (DPMPC), for nonlinear pulse compression. In addition to smaller footprint, a double-pass configuration is designed to achieve substantial bandwidth broadening without incurring noticeable higher-order dispersion, thus improving the temporal contrast over those of traditional single-pass geometry when only quadratic spectral phase can be compensated. In our proof-of-concept experiment, 187~$μ$J, 190-fs Yb-based laser pulse is compressed to 20~fs with high throughput (75%), high Strehl ratio (0.76) and excellent beam homogeneity by using DPMPC. Subsequently generated octave-spanning spectrum exhibits a significantly raised blue tail compared with that driven by pulses from a single-pass counterpart.
