Amplification of a probe field without population inversion in a two-level atom driven by a strong bichromatic pump field

In this paper, the absorption spectra of a two-electron V-type atom with parallel spins are investigated. The atom is driven by a pump field and a probe field. We focus our attention on the influence of the Coulomb interaction of the two electrons on the absorption spectra of the atom. It is shown that the absorption profile displays a two-peak structure when the intensity of the pump field is much lower than that of the Coulomb interaction. When the two intensity values are comparable, the profile contains five peaks, one central and two pairs of sidebands. In addition, the system exhibits lasing without inversion for just the appropriate intensity of the pump field.

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Amplification without Population Inversion in a Three level Atom

EQEC 96 1996 European Quantum Electronic Conference EQEC-96 ◽

10.1109/eqec.1996.561896 ◽

1996 ◽

Author(s):

M. Pinard ◽

G. Grynberg ◽

P. Mandel

Keyword(s):

Population Inversion ◽

Level Atom

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Intense laser interacting with a two-level atom: WKB expressions for dipole transitions and population inversion

Physics Letters A ◽

10.1016/s0375-9601(01)00844-1 ◽

2002 ◽

Vol 293 (1-2) ◽

pp. 1-9

Author(s):

Juan D Lejarreta ◽

Jose M Cerveró

Keyword(s):

Population Inversion ◽

Intense Laser ◽

Level Atom

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CONTROL OF COLLAPSE-REVIVAL PHENOMENON USING A TIME VARYING SQUEEZED FIELD

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863511005978 ◽

2011 ◽

Vol 20 (02) ◽

pp. 155-165 ◽

Cited By ~ 1

Author(s):

K. V. PRIYESH ◽

RAMESH BABU THAYYULLATHIL

Keyword(s):

Time Evolution ◽

Frequency Modulation ◽

Population Inversion ◽

Light Field ◽

Time Varying ◽

Light Atom ◽

Squeezed Light ◽

Level Atom ◽

Time Varying Frequency ◽

Atom Interaction

We have investigated the interaction of two level atom with time varying quadrature squeezed light field. Jaynes-Cummings model is used for solving the atom radiation interaction. Time evolution of the system for different squeezing parameter and phase have been studied. There are no well-defined revivals in population inversion when the squeezed phase is π and the squeezing parameter is greater than 0.5. Using a time varying frequency for the light field, it is found that the randomness of the population inversion and the collapse revival phenomena can be controlled. Frequency modulation of the field can thus be used as a tool for manipulating the squeezed light atom interaction.

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