Journal
MOLECULAR PHYSICS
Volume 111, Issue 14-15, Pages 2363-2373Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00268976.2013.821186
Keywords
parity violation; mid-infrared; high-resolution spectroscopy; fundamental physics; frequency metrology
Funding
- Centre National de la Recherche Scientifique (CNRS)
- Region Ile-de-France
- Agence Nationale de la Recherche (ANR, France) [NCPCHEM 2010 BLAN 724 3]
- Universite Paris 13
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To date no experiment has reached the level of sensitivity required to observe weak nuclear force-induced parity violation (PV) energy differences in chiral molecules. In this paper, we present the approach, adopted at Laboratoire de Physique des Lasers (LPL), to measure frequency differences in the vibrational spectrum of enantiomers. We review different spectroscopic methods developed at LPL leading to the highest resolutions, as well as 20years of CO2 laser stabilisation work enabling such precise measurements. After a first attempt to observe PV vibrational frequency shifts using sub-Doppler saturated absorption spectroscopy in a cell, we are currently aiming at an experiment based on Doppler-free two-photon Ramsey interferometry on a supersonic beam. We report on our latest progress towards observing PV with chiral organo-metallic complexes containing a heavy rhenium atom.
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