期刊
LASER PHYSICS LETTERS
卷 18, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1612-202X/abff49
关键词
contrast; multipass cell; post-compression
资金
- ELI-ALPS project [GINOP-2.3.6-15-2015-00001]
- European Union - European Regional Development Fund
The combination of multipass cell technique and nonlinear ellipse rotation enables simultaneous nonlinear spectral broadening and temporal cleaning of ultrashort pulses, achieving high-contrast and high-energy few-cycle pulses. The proposed technique shows potential for generating pulses with at least 10(3) contrast enhancement and more than five-fold temporal compression.
The simultaneous nonlinear spectral broadening and temporal cleaning of ultrashort pulses by the combination of the multipass cell (MPC) technique and nonlinear ellipse rotation are proposed and investigated with numerical simulations. The performance of the gas-filled MPC is studied at 800 and 1030 nm central wavelengths with mJ energy level. The results indicate that at least 10(3) contrast enhancement is feasible with 50% internal efficiency while the beam quality is preserved during propagation. At the same time, nonlinear spectral broadening allows for a more than five-fold temporal compression. The technique is tested at 20 mJ energy and it is presumably suitable for the generation of high contrast, high energy few-cycle pulses, too.
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