https://doi.org/10.1140/epjd/e2003-00275-5
Non-linear Sagnac interferometry for pump-probe dispersion spectroscopy
Department of Physics, Rochester Building, University of
Durham, South Road, Durham, DH1 3LE, UK
Corresponding author: a i.g.hughes@durham.ac.uk
Received:
5
June
2003
Published online:
16
September
2003
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
PACS: 39.30.+w – Spectroscopic techniques / 33.55.Ad – Optical activity, optical rotation; circular dichroism
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
