Magnetic optical activity in intense laser fields. II. Forward scattering

Abstract

The theoretical formulation of the nonlinear optical activity is utilized to describe the signal intensity in forward scattering. For cases in which the ratio of the Rabi frequency of an isolated transition to its relaxation rate is less than one, a perturbation procedure in this parameter is presented. The successive terms in the resulting series are interpreted as higher-order coherences or induced multipole moments. Application is made to the hyperfine components of the sodium D transitions where experimental data is described by a third-order calculation. Good agreement is obtained without invoking an induced hexadecapole moment as was proposed originally.

Shape of the coherent-population-trapping resonances registered in fluorescence at different experimental geometries

“…For this purpose, a calibration of the set of equation was performed. The widths of the resonance calculated for a set of Rabi frequencies were calibrated on a power scale in accordance with the work of Giraud-Cotton et al 31 (Figure 5a). The resonance widths measured in an expanded beam (obtained by regression analysis) were compared with the theoretical widths for Rabi frequency values corresponding to the calibration curves ( Figure 5b).…”

<title>Calculation of resonant polarization plane rotation effects in alkaline atoms using quasi-energetic-state treatment</title>

“…Calculations of eigenvalues of L versus El show the anticrossing to occur at the values of vector-potential of probe field A> 10 ( ;clc rri) others.In Fig.2 the two-photon resonance is well seen. The polarization plane rotation spectra at A < 1O(Gs) have been found using the expression for 3 (7) in the absence of saturation due to AL1.The spectra consist of two or three groups of resonances near D1 and D2 lines l3 The form and quantity of resonancies depend on the magnetic field strength, the detuning 2, the polarization and intensity of pump field. The polarization plane rotation spectra at A < 1O(Gs) have been found using the expression for 3 (7) in the absence of saturation due to AL1.The spectra consist of two or three groups of resonances near D1 and D2 lines l3 The form and quantity of resonancies depend on the magnetic field strength, the detuning 2, the polarization and intensity of pump field.…”

Nonlinear ring structures in forward scattering of resonant monochromatic laser radiation

“…The features of forward-scattering signals as a function of the magnetic detuning 6 have been studied many times before [6,10,17,18]. The purpose of this work is to compare the spatial structures predicted by Eqs.…”

“…In deriving Eqs. (8) - (10) we assumed an optically thin matter. Neon cannot be considered optically thin when we are dealing with the Is2(J = 1)-2p, (J =0) transition.…”

“…We have scaled Eqs (8). and(10) so that ku =1. Calculated results on the transverse intensity distribution of forward-scattered light to be compared with the curves ofFig.…”