Abstract
We present a detailed analysis of the creation of population inversion and coherent UV radiation with a new scheme, i.e., nonlinear excitation of an inner atomic electron in a strong laser field, accompanied by filling the resulting inner-shell vacancy with an external-shell electron. Our analysis is given for the experimental results obtained by Boyer, et al. in 1984 [ J. Opt. Soc. Am. B 1, 3 ( 1984)]. The principal new features of the scheme under consideration are the following: (1) the two-electron character of atomic excitation with subsequent emission of a high-energy photon, (2) the initial absence of multiphoton resonance between the ground state and the level to be excited, and (3) strong-field-induced level crossing and excitation of the upper working level by means of Landau–Zener-type transitions.
© 1990 Optical Society of America
Full Article | PDF ArticleMore Like This
Bernd Crasemann, Mau Hsiung Chen, and Hans Mark
J. Opt. Soc. Am. B 1(2) 224-231 (1984)
Taro Sekikawa, Tomohiro Yamazaki, Yasuo Nabekawa, and Shuntaro Watanabe
J. Opt. Soc. Am. B 19(8) 1941-1945 (2002)
L. Kelley, Z. Germain, E. C. Jones, D. Milliken, and Barry C. Walker
J. Opt. Soc. Am. B 38(12) 3646-3651 (2021)