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, ‡}

Temporal power profiles of compressed pulses with and without concentric phase mask for input energy of 10.0 mJ: (a) without concentric phase mask, (b)–(e) with concentric phase mask under duty cycles of 0.4, 0.5, 0.6, and 0.8. (a)–(e) GDD compensations are −42.5, −38.0, −55.0, -41.0, and −49 fs², respectively, and TOD compensations are 0, 80, 0, 0, 50 fs³.