Malekmohamadi Sedigheh, Pergament Mikhail, Kulcsar Gabor, Seidel Marcus, Liu Yizhou, Edelmann Marvin, Kellert Martin, Thesinga Jelto, Heyl Christoph M, Kärtner Franz X
Opt Express. 2024 Oct 21;32(22):39460-39468. doi: 10.1364/OE.538748.
We report the development of a robust Yb-doped fiber laser system based on chirped-pulse amplification (CPA), generating 44-fs laser pulses with up to 70-µJ pulse energy at a 1-MHz repetition rate. It consists of a Yb-doped nonlinear polarization evolution (NPE) mode-locked fiber oscillator, a chirped fiber Bragg grating (CFBG) stretcher, a wave-shaper for manipulating the spectrum of the signal, cascaded fiber amplifiers, and two compression units. The output pulse duration of 44 fs for efficient high harmonic generation (HHG) was achieved by a multi-pass multi-plate Herriott-type non-linear compression unit.
我们报道了一种基于啁啾脉冲放大（CPA）的稳健掺镱光纤激光系统的研制，该系统在1 MHz重复频率下产生脉宽为44 fs、脉冲能量高达70 μJ的激光脉冲。它由一个掺镱非线性偏振演化（NPE）锁模光纤振荡器、一个啁啾光纤布拉格光栅（CFBG）展宽器、一个用于操纵信号光谱的波形整形器、级联光纤放大器和两个压缩单元组成。通过一个多程多片赫里奥特型非线性压缩单元实现了用于高效高次谐波产生（HHG）的44 fs输出脉冲宽度。
