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Fischer, Peter
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Smijesh, N., Zhang, X., Fischer, P., Muschet, A., Salh, R., Tajalli, A., . . . Veisz, L. (2019). Contrast improvement of sub-4 fs laser pulses using nonlinear elliptical polarization rotation. Optics Letters, 44(16), 4028-4031
Open this publication in new window or tab >>Contrast improvement of sub-4 fs laser pulses using nonlinear elliptical polarization rotation
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2019 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 44, no 16, p. 4028-4031Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Optical Society of America, 2019
National Category
Atom and Molecular Physics and Optics
urn:nbn:se:umu:diva-162848 (URN)10.1364/OL.44.004028 (DOI)000481541400031 ()31415539 (PubMedID)
Available from: 2019-09-09 Created: 2019-09-09 Last updated: 2019-09-09Bibliographically approved

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