We report on a substantial light-force-induced line-center shift of the sub-Doppler dip in a saturation spectroscopy configuration where mechanical effects are expected to be negligible. We observe the shift on the 2 3S1 →2 3P1 open transition of 4He that is relevant for a determination of the fine-structure constant alpha [Phys. 11 Rev. Lett. 82, 1112 (1999)]. We discuss the physical origin of the shift and we provide a numerical analysis to support our interpretation. The shift can be quite important for various other high-precision spectroscopy measurements.
Minardi F., Artoni M., Cancio P., Inguscio M., Giusfredi G., Carusotto I. (1999). Frequency shift in saturation spectroscopy induced by mechanical effects of light. PHYSICAL REVIEW A, 60(5), 4164-4167 [10.1103/PhysRevA.60.4164].
Frequency shift in saturation spectroscopy induced by mechanical effects of light
Minardi F.;
1999
Abstract
We report on a substantial light-force-induced line-center shift of the sub-Doppler dip in a saturation spectroscopy configuration where mechanical effects are expected to be negligible. We observe the shift on the 2 3S1 →2 3P1 open transition of 4He that is relevant for a determination of the fine-structure constant alpha [Phys. 11 Rev. Lett. 82, 1112 (1999)]. We discuss the physical origin of the shift and we provide a numerical analysis to support our interpretation. The shift can be quite important for various other high-precision spectroscopy measurements.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
