We considered the tunnelling ionization of an electron under the influence of a monochromatic laser beam with the elliptical polarization. Arbitrary values of ellipticity were observed. The influence of ponderomotive potential and Stark shift on the ionization rate was discussed. A brief description of the dependence of the ponderomotive potential and the Keldysh parameter on the field intensity and ellipticity is given.
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The authors are grateful to the Serbian Ministry of Education, Science and Technological Development for financial support through Projects 171020 and 171021.
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MILADINOVIĆ, T.B., PETROVIĆ, V.M. Behaviour of tunnelling transition rate of argon atom exposed to strong low-frequency elliptical laser field. Pramana - J Phys 86, 565–573 (2016). https://doi.org/10.1007/s12043-015-1023-7