Journal
LASER PHYSICS LETTERS
Volume 16, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1612-202X/ab3852
Keywords
temporal contrast; ultrafast lasers; post-compression
Categories
Funding
- LASERLAB-EUROPE [LOA002361, 284464]
- Agence Nationale pour la Recherche [ANR-11-EQPX-005-ATTOLAB]
- Region Ile-de-France [SESAME 2012 ATTOLITE]
- European Research Council (ERC) [ExCoMet 694596]
- ELI-ALPS project [GINOP-2.3.6-15-2015-00001]
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We report on the simultaneous temporal filtering and compression of 30 fs laser pulses down to 5 fs duration via nonlinear elliptical polarization rotation (NER) in a stretched flexible hollow fibre compressor. Both the achieved 2-cycle pulse duration and the internal conversion efficiency of similar to 47% are solely limited by the applied fibre geometry. Our investigations show that precise control of the NER process could help significantly improve the temporal fidelity of high-energy hollow fibre compression schemes.
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