Abstract.
We explore pump-probe non-linear Sagnac interferometry as a tool to measure the dispersive properties of a medium. We introduce the background theory, and show experimental spectra obtained on the D2 transition with 85Rb and 87Rb. The measured dispersion spectra are in excellent agreement with the Kramers-Kronig relations. In addition, as both beams traverse identical optical paths, Sagnac interferometry is very robust against mechanical vibration
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Received: 5 June 2003, Published online: 16 September 2003
PACS:
39.30. + w Spectroscopic techniques - 33.55.Ad Optical activity, optical rotation; circular dichroism
G. Jundt: Present address: Institute of Quantum Electronics, Department of Physics, ETH Zürich, Hönggerberg 8093, Switzerland.
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Jundt, G., Purves, G.T., Adams, C.S. et al. Non-linear Sagnac interferometry for pump-probe dispersion spectroscopy. Eur. Phys. J. D 27, 273–276 (2003). https://doi.org/10.1140/epjd/e2003-00275-5
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DOI: https://doi.org/10.1140/epjd/e2003-00275-5