Progress in Ultrafast Intense Laser Science XV

0538052 - FZÚ 2021 RIV CH eng M - Monography Chapter
Ciappina, Marcelo F. - Bulanov, Sergey V. - Ditmire, T. - Korn, Georg - Weber, Stefan A.
Towards laser intensity calibration using high-field ionization.
Progress in Ultrafast Intense Laser Science XV. Vol. Chapter 8. Cham: Springer Nature Switzerland AG, 2020 - (Yamanouchi, K.; Charalambidis, D.), s. 149-176. Topics in Applied Physics, 136. ISBN 978-3-030-47097-5
R&D Projects: GA MŠMT EF16_019/0000789; GA MŠMT LQ1606; GA MŠMT EF15_003/0000449
Grant - others:OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789; OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Institutional support: RVO:68378271
Keywords : ultrahigh laser intensities * tunneling cascades
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

We present an approach for direct measurement of ultrahigh laser intensities in the range 1020–1024 W/cm2.The method is based on the use of multiple sequential tunneling ionization of heavy atoms with adequately high ionization potentials. We show that, due to the highly nonlinear dependence of tunneling ionization rates on the electromagnetic field strength, an off-set in the charge distribution of ions appears to be clearly sensitive to the peak value of intensity in the laser focus. Based on the tunnel-ionization mechanism, a simple analytic theory helps in estimating the maximal charge state produced at a given laser intensity.
Permanent Link: http://hdl.handle.net/11104/0315877