5 research outputs found
Fluorescence spectrum of a two-level atom driven by a multiple modulated field
We investigate the fluorescence spectrum of a two-level atom driven by a multiple amplitude-modulated field. The driving held is modeled as a polychromatic field composed of a strong central (resonant) component and a large number of symmetrically detuned sideband fields displaced from the central component by integer multiples of a constant detuning. Spectra obtained here differ qualitatively from those observed for a single pair of modulating fields [B. Blind, P.R. Fontana, and P. Thomann, J. Phys. B 13, 2717 (1980)]. In the case of a small number of the modulating fields, a multipeaked spectrum is obtained with the spectral features located at fixed frequencies that are independent of the number of modulating fields and their Rabi frequencies. As the number of the modulating fields increases, the spectrum ultimately evolves to the well-known Mellow triplet with the sidebands shifted from the central component by an effective Rabi frequency whose magnitude depends on the initial relative phases of the components of the driving held. For equal relative phases, the effective Rabi frequency of the driving field can be reduced to zero resulting in the disappearance of fluorescence spectrum, i.e., the atom can stop interacting with the field. When the central component and the modulating fields are 180 degrees out of phase, the spectrum retains its triplet structure with the sidebands located at frequencies equal to the sum of the Rabi frequencies of the component of the driving field. Moreover, we shaw that the frequency of spontaneous emission can be controlled and switched from one frequency to another when the Rabi frequency or initial phase of the modulating fields are varied
Tarynskoe deposit vein-disseminated ore - new type of gold mineralization in the Verkhne-Indigirsk region of Yakutia
On a basis of the detailed investigation of chemical composition for Tarynskoe deposit ores, in the Verkhne-Indigirsk region for the first time the gold-sulfide disseminated type of large-scale gold mineralization is established and full ore-formation series of vein-disseminated noble-metal mineralization is revealed. Disseminated ores and ore-formation series of Tarynskoe deposit are most similar to those of Maiskoe deposit, Chukotka
Tarynskoe deposit vein-disseminated ore - new type of gold mineralization in the Verkhne-Indigirsk region of Yakutia
On a basis of the detailed investigation of chemical composition for Tarynskoe deposit ores, in the Verkhne-Indigirsk region for the first time the gold-sulfide disseminated type of large-scale gold mineralization is established and full ore-formation series of vein-disseminated noble-metal mineralization is revealed. Disseminated ores and ore-formation series of Tarynskoe deposit are most similar to those of Maiskoe deposit, Chukotka