Energetic few-cycle pulse compression in gas-filled hollow core fiber with concentric phase mask

Zhao Yu^{1, 2}, Huang Zhi-Yuan^{1, 2}, Zhao Rui-Rui^{1, 2}, Wang Ding^{1, †}, Leng Yu-Xin^{1, ‡}

Energy transmissions of input pulses during propagation in HCF with different input energy.