1. Laser stabilization using saturated absorption in a cavity-QED system.
- Author
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Tieri, D. A., Cooper, J., Christensen, Bjarke T. R., Thomsen, J. W., and Holland, M. J.
- Subjects
- *
QUANTUM electrodynamics , *ABSORPTION , *KELVIN temperature scale , *DOPPLER effect , *OPTICAL properties - Abstract
We consider the phase stability of a local oscillator (or laser) locked to a cavity-QED system composed of atoms with an ultranarrow optical transition. The atoms are cooled to milli-Kelvin temperatures and then released into the optical cavity. Although the atomic motion introduces Doppler broadening, the standing-wave nature of the cavity causes saturated absorption features to appear, which are much narrower than the Doppler width. These features can be used to achieve an extremely high degree of phase stabilization, competitive with the current state of the art. Furthermore, the inhomogeneity introduced by finite atomic velocities can cause optical bistability to disappear, resulting in no regions of dynamic instability and thus enabling a new regime accessible to experiments where optimum stabilization may be achieved. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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