Line polarization of laser-excited NaD2-transition resonance fluorescence

Abstract

The sodium D& transition is resonantly excited by~-polarized, narrow-band laser radiation. The line polarization of the resulting fluorescence detected normally to the plane containing the electric-field vector of the radiation and its propagation direction, as well as the atomic beam, is measured as a function of radiation intensity and tuning. The data are compared to calculations from a quantumelectrodynamic theory which includes all participating energy states in the hyperfine representation. The quantitative agreement is very good.PACS number(s): 32.80. Bx, 32.50.+d, 42.50.Hz, 42.50.Wm

Optical pumping of the Na D2 transition with elliptically polarized light

“…The con®guration for Optical pumping of the Na D2 transition 797 previous measurements of P L is when¯ˆ0 except for the interchange of I…0 † and I…90 † [23,24]. The value of approximately ¡0:4 is consistent with previous measurements.…”

“…A photomultiplier tube mount and alignment assembly [23] was positioned directly below the laser±atom interaction region. A quartz viewport provided a window through which the interaction region could be imaged.…”

“…The matrix elements in equation (12) are evaluated using standard reduction techniques enabling P L to be determined by numerically calculating the hÀ e 0 e i terms using the developed QED model [23]. Figure 6 shows the results of the measurement of the line polarization P L as a function of the angle,¯.…”

Low energy superelastic scattering from the 41P1state of calcium in an (e, 2e) spectrometer

“…Since this time, a more sophisticated semi-classical theory has been derived [45], as well as a full quantum electro-dynamic model [15]. These models have been exhaustively tested against experiment, and the QED model has been found to produce more exact results compared to the semi-classical or rate equation models [46]. This agreement occurs since the equations of motion in the QED model can be rigorously derived from a general set of equations, within the usual constraint that the rotating wave and dipole approximations are valid [47].…”

Fluorescence polarization imaging of Sisyphus cooling in an atomic beam

“…The relationship between the polarization properties of resonance fluorescence and the internal state of atoms in polarized near-resonant laser fields have been analyzed in detail for use in atomic collision experiments [18,19]. The linear polarization of the fluorescence perpendicular to the cooling laser beams is both readily accessible experimentally and sensitive to the effects of localization and optical pumping.…”