A density matrix based complete analytical solution for the probe transmission through a three-level cascade type Doppler free atomic system is obtained. The probe beam couples the ground level to the energy level lying at the middle whereas the control field is acting between the level at the middle and the upper most energy level. The analysis is valid for comparable values of probe and control Rabi frequencies too. The probe response shows EIT window when Raman condition is satisfied. The variation of the EIT width with control Rabi frequency under Doppler free condition is studied using the parameters of $5S_{1/2}\rightarrow 5P_{3/2}\rightarrow 5D_{5/2}$ transitions of $^{87}$ Rb. At high value of the probe field intensity compared to that of the control field, enhancement in probe absorption is noticed. The increase of the EIT width with control Rabi frequency under Doppler free situation is examined.A density matrix based complete analytical solution for the probe transmission through a three-level cascade type Doppler free atomic system is obtained. The probe beam couples the ground level to the energy level lying at the middle whereas the control field is acting between the level at the middle and the upper most energy level. The analysis is valid for comparable values of probe and control Rabi frequencies too. The probe response shows EIT window when Raman condition is satisfied. The variation of the EIT width with control Rabi frequency under Doppler free condition is studied using the parameters of $5S_{1/2}\rightarrow 5P_{3/2}\rightarrow 5D_{5/2}$ transitions of $^{87}$Rb. At high value of the probe field intensity compared to that of the control field, enhancement in probe absorption is noticed. The increase of the EIT width with control Rabi frequency under Doppler free situation is examined.

Journal of Atomic Molecular Condensate and Nano PhysicsAug 22, 20161 citation

Nonlinear absorption study in four and five energy level systems

Allam Srinivasa Rao

arXiv:1802.09907OptikJun 18, 201810 citations

Lineshapes in Three-Level Spectroscopy with an Intense Laser Field

Motowo Tsukakoshi, Kōichi Shimoda

Effects of an intense saturating radiation on a probe lineshape under Doppler broadening are studied in a three-level system when the frequency of the probe light is higher than that of the saturating light. The problem is analysed in the approximation of weak probe field using an ensemble averaged density matrix. An analytical form of the lineshape is obtained for the resonant saturating field of high intensity at which the Rabi nutation frequency is larger than the Doppler width of the probe transition. The linewidth of probe absorption depends on the Doppler width and the frequency ratio of the probe light to the saturating light. The computer calculation is carried out to find the lineshape in detail at a light intensity where the Rabi nutation frequency is comparable to the Doppler width.Effects of an intense saturating radiation on a probe lineshape under Doppler broadening are studied in a three-level system when the frequency of the probe light is higher than that of the saturating light. The problem is analysed in the approximation of weak probe field using an ensemble averaged density matrix. An analytical form of the lineshape is obtained for the resonant saturating field of high intensity at which the Rabi nutation frequency is larger than the Doppler width of the probe transition. The linewidth of probe absorption depends on the Doppler width and the frequency ratio of the probe light to the saturating light. The computer calculation is carried out to find the lineshape in detail at a light intensity where the Rabi nutation frequency is comparable to the Doppler width.

Japanese Journal of Applied PhysicsApr 1, 19806 citations

Investigation of the absorption spectrum of a two-level system in intense nonmonochromatic radiation fields

A. M. Bonch-Bruevich, S. G. Przhubelskii, V. A. Khodovoǐ +1 more

Zhurnal Eksperimentalnoi i Teoreticheskoi FizikiFeb 1, 19760 citations

Effect of the emission field on the absorption of pump radiation in a three-level system

Vladimir I Baranov, D. D. Maliuta, A P Strel'tsov +1 more

Soviet Journal of Quantum ElectronicsApr 1, 19870 citations

5S_{1/2}\rightarrow 5P_{3/2}\rightarrow 5D_{5/2}

transitions of

^{87}

Rb. At high value of the probe field intensity compared to that of the control field, enhancement in probe absorption is noticed. The increase of the EIT width with control Rabi frequency under Doppler free situation is examined.