✦ LIBER ✦

Fractal character of quasi-energy states in intense polychromatic fields

✍ Scribed by Kwanghsi Wang; Shih-I Chu

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 408 KB
Volume: 153
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)80137-4

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✦ Synopsis

The quasi-energy eigenfunctions of N-level quantum systems driven by intense M-mode polychromatic fields are studied by means of the many-mode Floquet theory. It is found that the eigenfunctions exhibit striking self-similar (fracta1) behavior in the temporal Fourier space. A method is presented for the calculation of the fractal (Of) and entropy (0,) dimensions of quasi-energy states and applied to the study of the behavior of two-level systems perturbed by bichromatic fields. The fractal dimensions are found to be (laser) intensity dependent and obey the relationship Df$ II, < M.