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Proceedings Paper

Sensitive pulsed pump-probe polarimetry for detection of parity violation in caesium on a transmitted beam
Author(s): Jocelyne Guena; D. Chauvat; Philippe Jacquier; M. Lintz; Marie-Anne Bouchiat
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Paper Abstract

We describe an ongoing experiment to measure parity violation in atomic caesium, based on detection by stimulated emission. Our goal is to measure to 1 percent a left-right asymmetry of 10-6 to test electroweak theory and look for new physics beyond the standard model. The Cs highly forbidden transition, 6S.5 - 7S.5, is excited by a pump laser pulse in a longitudinal electric field E. the PV asymmetry resulting from the weak interaction during optical excitation is converted into an anisotropy in the gain of a probe laser pulse, which stimulates the allowed transition 7S.5 - 6P3/2, and manifests itself as a tiny E-odd rotation of the probe linear polarization. Differential polarimetry allows dark- field detection of the rotation angle and discrimination of the PV effect is based on several concepts of symmetry. Original amplification of polarization asymmetry by stimulated emission is presented with perspectives for signal-to-noise improvements.

Paper Details

Date Published: 25 February 1999
PDF: 9 pages
Proc. SPIE 3736, ICONO '98: Quantum Optics, Interference Phenomena in Atomic Systems, and High-Precision Measurements, (25 February 1999); doi: 10.1117/12.340143
Show Author Affiliations
Jocelyne Guena, Ecole Normale Superieure (France)
D. Chauvat, Ecole Normale Superieure (France)
Philippe Jacquier, Ecole Normale Superieure (France)
M. Lintz, Ecole Normale Superieure (France)
Marie-Anne Bouchiat, Ecole Normale Superieure (France)

Published in SPIE Proceedings Vol. 3736:
ICONO '98: Quantum Optics, Interference Phenomena in Atomic Systems, and High-Precision Measurements
Anatoli V. Andreev; Sergei N. Bagayev; Anatoliy S. Chirkin; Vladimir I. Denisov, Editor(s)

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