6533b7d6fe1ef96bd126579d

RESEARCH PRODUCT

Atomic Transitions and Population Control by Laser Frequency Scanning Speed and Magnetic Field

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In this thesis the influence of laser radiation and external uniform magnetic field on alkali-metal atomic vapor is studied. We focused on three topics. In the first part, we examined atomic population control in an M-type system to demonstrate that such systems can serve as universal three-bit logical devices. The second part concerns an experiment of atomic spectroscopy. From the fluorescence spectra recorded for stationary, transient and non-stationary interaction regimes, we were able to extract important parameter values which are the relaxation rate of the lower energy levels to the equilibrium isotropic state, the diffusion coefficient in a buffered vapor cell, and the corresponding collisional cross section. In addition, optimal temporal conditions are obtained to provide efficient control of the atomic population. In the last chapter, an interesting application of a magnetic field interacting with alkali-metal atoms is presented. Theoretically and numerically, the transitions between magnetic sublevels of alkaline atoms in the Zeeman and Paschen-Back regimes are examined. We obtained magnetic-field values canceling transitions which only depend on the fundamental physical and atomic constants. These values in the case of an appropriate experimental determination can serve as standards of magnetometry.