期刊
OPTICS LETTERS
卷 44, 期 16, 页码 4028-4031出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.44.004028
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- Kempestiftelserna
- Vetenskapsradet (VR) [2016-05409]
- Cluster of Excellence PhoenixD, Hannover, Germany
Temporal-intensity contrast is crucial in intense laser-matter interaction to circumvent the undesirable expansion of steep high-density plasma prior to the interaction with the main pulse. Nonlinear elliptical polarization rotation in an argon filled hollow-core fiber is used here for cleaning pedestals/satellite pulses of a chirped-pulse-amplifier based Ti: Sapphire laser. This source provides similar to 35 mu J energy and sub-4-fs duration, and the process has >50% internal efficiency, more than the most commonly used pulse cleaning methods. Further, the contrast is improved by 3 orders of magnitude when measured after amplifying the pulses to 16 TW using non-collinear optical parametric chirped pulse amplification with a prospect to even further enhancement. (C) 2019 Optical Society of America
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