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Bjorn Manuel Hegelich
초강력 레이저과학 연구단
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Beam distortion effects upon focusing an ultrashort petawatt laser pulse to greater than 1022 W/cm2

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Title
Beam distortion effects upon focusing an ultrashort petawatt laser pulse to greater than 1022 W/cm2
Author(s)
Tiwari G.; Gaul E.; Martinez M.; Dyer G.; Gordon J.; Spinks M.; Toncian T.; Bowers B.; Jiao X.; Kupfer R.; Lisi L.; McCary E.; Roycroft R.; Yandow A.; Glenn G.D.; Donovan M.; Ditmire T.; Hegelich B.M.
Publication Date
2019-06
Journal
OPTICS LETTERS, v.44, no.11, pp.2764 - 2767
Publisher
OPTICAL SOC AMER
Abstract
© 2019 Optical Society of America.When an ultrashort laser pulse is tightly focused to a size approaching its central wavelength, the properties of the focused spot diverge from the diffraction-limited case. Here, we report on this change in behavior of a tightly focused petawatt-class laser beam by an f ∕1 off-axis parabolic mirror (OAPM). Considering the effects of residual aberration, the spatial profile of the near-field, and pointing error, we estimate the deviation in peak intensities of the focused spot from the ideal case. We verify that the estimated peak intensity values are within an acceptable error range of the measured values. With the added uncertainties in target alignment, we extend the estimation to infer on-target peak intensities of ≥1022 W∕cm2 for a target at the focal plane of this f ∕1 OAPM
URI
https://pr.ibs.re.kr/handle/8788114/6375
ISSN
0146-9592
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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