Berlin 2001 – wissenschaftliches Programm

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MO: Molekülphysik

MO 12: Posters Friday: Spectroscopy

MO 12.1: Poster

Freitag, 6. April 2001, 12:30–15:00, AT3

Power broadening revisited: Theory and experiment — •Torsten Rickes¹, N.V. Vitanov^2,3, B.W. Shore⁴, L. Yatsenko⁵, K. Böhmer¹, T. Halfmann¹, and Klaas Bergmann¹ — ¹Fachbereich Physik, 67653 Kaiserslautern — ²Department of Physics, Sofia University, James Boecher 5 blvd., 1126 Sofia — ³also at Helsinki Institute of physics, PL 9, 00014 University of Helsinki — ⁴LLNL, Livermore, CA 94550, USA — ⁵Institute of Physics, prospect Nauki 46, Kiev-22, 252650

The spectral width of an atomic absorption line, observed with steady cohernet light source, typically increases as the light intensity increases (power broadening). We point out classes of pulsed light observations where power broadening does not always occur and depends critically upon the nature of excitation and the type of measurement. We present analytical and numerical examples, supported by experimental results.