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25 February 1999 Sensitive pulsed pump-probe polarimetry for detection of parity violation in caesium on a transmitted beam
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Proceedings Volume 3736, ICONO '98: Quantum Optics, Interference Phenomena in Atomic Systems, and High-Precision Measurements; (1999) https://doi.org/10.1117/12.340143
Event: ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, 1998, Moscow, Russian Federation
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.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jocelyne Guena, D. Chauvat, Philippe Jacquier, M. Lintz, and Marie-Anne Bouchiat "Sensitive pulsed pump-probe polarimetry for detection of parity violation in caesium on a transmitted beam", Proc. SPIE 3736, ICONO '98: Quantum Optics, Interference Phenomena in Atomic Systems, and High-Precision Measurements, (25 February 1999); https://doi.org/10.1117/12.340143
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