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A theoretical study of the two-photon ionization of metastable He with linearly and circularly polarized laser light

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2 Author(s)
Sharma, R. ; University of Roorkee, Roorkee, India ; Mathur, K.

Generalized cross sections \hat{\sigma }_{L} and \hat{\sigma }_{C} for the two-photon ionization of He from the metastable 2^{1}S state are calculated for linearly and circularly polarized incident laser light, respectively, in the wavelength range 3725-5100 Å. Significant enhancement of cross sections occurs through real 3^{1}P and 4^{1}P p intermediate states. The ratio \hat{\sigma }_{C} / \hat{\sigma }_{L} shows a minima at the wavelengths close to 3743 and 4450 Å.

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Quantum Electronics, IEEE Journal of  (Volume:14 ,  Issue: 10 )