Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 31: Poster Laserspektroskopie
Q 31.5: Poster
Dienstag, 20. März 2007, 16:30–18:30, Poster C
Giant Kerr Effect in the presence of Electromagnetically Induced Transparency or Absorption — •Luca Spani Molella, Gerrit Kühn, Katrin Dahl, Rolf-Hermann Rinkleff, and Karsten Danzmann — Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik und Institut für Gravitationsphysik, Leibnitz Universität Hannover, Hannover, Germany
The phenomena of electromagnetically induced transparency and electromagnetically induced absorption were investigated in two similar degenerate closed transitions within the D2 line of caesium. With a three-beam heterodyne interferometer the dispersion and absorption signals of two orthogonally polarised probe and coupling lasers could be measured after the interaction with a caesium beam propagating orthogonally to the direction of propagation of the lasers. On the basis of the measured probe dispersion signals it could be calculated that the Kerr effect of the analysed system was several orders of magnitudes greater than that measurable in common Kerr media, while the corresponding absorption coefficient remained comparable with that measurable within glass.