Coupling-probe laser spectroscopy of degenerate two-level systems: An experimental survey of various polarisation combinations |
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Authors: | Luca Spani Molella Katrin Dahl Karsten Danzmann |
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Institution: | Max-Planck-Institut für Gravitationsphysik, Albert-Einstein-Institut, Hannover and Institut für Gravitationsphysik, Leibniz Universität Hannover, Callinstraße 38, D-30167 Hannover, Germany |
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Abstract: | Several absorption and dispersion spectra of a probe and a coupling laser of different polarisations generating electromagnetically induced absorption in atomic caesium were measured and compared. In the case of at least one linearly polarised laser, electromagnetically induced absorption and absorption within transparency were observed for the probe and coupling laser, respectively. For laser beams of counter-rotating circular polarisation the coupling absorption spectra changed from absorption within transparency to transparency within transparency once the medium was saturated. However, the corresponding parametric dispersion spectra remained unchanged in structure. |
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Keywords: | 39 30 +w 42 50 Gy 78 20 Fm |
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