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Lasers rf double resonance

Childs, W. J. Poulsen, 0. and Goodman, L. S., "High precision measurement of 235y ground-state hyperfine structure by laser-rf double resonance," Opt. Letters, 1979, 4, 35-37. [Pg.414]

Laser-RF Double-Resonance Spectroscopy in Molecular Beams... [Pg.235]

Sauer, B.E., Jun Wang, and Hinds, E.A., Laser-rf double resonance spectroscopy of 174 Yhp in the X E" " state Spin-rotation, hyperfme interactions, and the electric dipole moment, 7. Chem Phys., 105, 7412, 1996. [Pg.596]

Major advantages of microwave-optical polarization spectroscopy are narrower linewidths as compared to conventional laser-rf double resonance and smaller intensities required for the laser light field and the micro-waves, so that strongly saturating conditions can be avoided. Therefore, the sensitivity as well as the resolution can be greatly enhanced. [Pg.17]

Figmre 5. Experimental setup for fast-beam laser-rf double resonance spectroscopy. (From Ref. [Pg.92]

Fig. 14. Increase in resonance fluorescence observed in laser-rf double resonance experiment on one of the hyperfine levels of the state of After Childs et al. (1983). Using similar methods a... Fig. 14. Increase in resonance fluorescence observed in laser-rf double resonance experiment on one of the hyperfine levels of the state of After Childs et al. (1983). Using similar methods a...
M. Dubke, W. Jitschin, G. Meisel, W.J. Childs Laser-RF-double resonance measurement of the quadrupole moments of Mo and 97 0. Phys. [Pg.677]

A recent laser-rf double resonance experiment gave a Q value of -0.15(5) x 10 ... [Pg.498]

The combination of laser-spectroscopic techniques with molecular beams and RF spectroscopy has considerably enlarged the application range of optical-RF doubleresonance schemes. This optical-RF double-resonance method has now become a very powerful technique for high-precision measurements of electric or magnetic dipole moments, of Lande factors, and of fine or hyperfine splitting in atoms and molecules. It is therefore used in many laboratories. [Pg.232]

Fig. 5.11 Atomic beam resonance apparatus with combined electron-impact and laser pumping for the sensitive detection of optical-RF double resonance in highly excited states [529]... Fig. 5.11 Atomic beam resonance apparatus with combined electron-impact and laser pumping for the sensitive detection of optical-RF double resonance in highly excited states [529]...
RF transitions between sublevels of the upper state result in a change of the polarization and the spatial distribution of the laser-induced fluorescence. They can therefore be monitored through polarizers in front of the photomultiplier. Since the RF transitions deplete the optically pumped upper level, the RF double-resonance signal at co2 = cokmj = [E kj) — E km)yh has an opposite sign to that of the lower state at ol> = coinj (Fig. 10.6). [Pg.574]

The same authors measured the nuclear magnetic dipole moment of Pr in an excited electronic state with rf-laser optical double resonance in CaF2 Pr. The precision was increased by two orders of magnitude in comparison to the best previous (atomic beam) measurement. The improvement was based on an appropriate choice of electronic state, crystal site symmetry, and magnetic field direction which minimized the electronic contribution to the nuclear moment to 3 x 10 . One of the six resolved... [Pg.35]

Up to now the heterodyne technique is the most accurate method to determine such line splittings. Its accuracy is comparable with the optical-rf double-resonance method but its application range is more general. Two independent lasers are stabilized onto the line centers of two different molecular transitions (Fig.10.48). The output of the two lasers is superimposed on a nonlinear detector, such as a photomultiplier in the visible range or a semiconductor diode in the infrared. [Pg.523]

This change ANi of the population density can be probed by a second EM wave, which may be a radio frequency (RE) field, a microwave, or another laser beam. If this probe wave is tuned into resonance with a molecular transition sharing one of the two levels /) or A ) with the pump transition, the pump laser and the probe wave are simultaneously in resonance with the coupled atomic or molecular transitions (Fig. 5.1). This situation is therefore called optical-RF, optical-microwave or optical-optical double resonance. [Pg.225]

In this chapter we shall treat the most important laser double-resonance techniques by illustration with several examples. While the pump transition is always induced by a pulsed or cw laser, the probe field may be provided by any coherent source in the spectral range between the RF region and the ultraviolet. [Pg.226]

If the optically pumped sample is placed inside an RF field with the frequency o)rf tuned into resonance with the transition ij) / ) between two sublevels of the lower state, the level population N in) that was depleted by optical pumping will increase again. This leads to an increased absorption of the optical pump beam, which may be monitored by the corresponding increase of the laser-induced fluorescence intensity. Measuring Imicorf) while co f is tuned yields a double-resonance signal at o)rf = (Oinj = [E in) - E ij)]/h (Fig. 5.7). [Pg.232]

In this contribution we present two laser spectroscopic methods that use coherent resonance Raman scattering to detect rf-or laser -induced Hertzian coherence phenomena in the gas phase these novel coherent double resonance techniques for optical heterodyne detection of sublevel coherence clearly extend the above mentioned previous methods using incoherent light sources. In the case of Doppler broadened optical transitions new signal features appear as a result of velocity-selective optical excitation caused by the narrow-bandwidth laser. We especially analyze the potential and the limitations of the new detection schemes for the study of collision effects in double resonance spectroscopy. In particular, the effect of collisional velocity changes on the Hertzian resonances will be investigated. [Pg.176]

Recently, a novel rf-laser double resonance method for optical heterodyne detection of sublevel coherence phenomena was introduced. This so-called Raman heterodyne technique relies on a coherent Raman process being stimulated by a resonant rf field and a laser field (see Fig.l(a)). The method has been applied to impurity ion solids for studying nuclear magnetic resonances at low temperature3 5 and to rf resonances in an atomic vapor /, jn this section we briefly review our results on Raman heterodyne detection of rf-induced resonances in the gas phase. As a specific example, we report studies on Zeeman resonances in a J=1 - J =0 transition in atomic samarium vapor in the presence of foreign gas perturbers. [Pg.176]

Our studies of the effect of velocity-changing collisions in an rf-laser double resonance experiment contribute to a new vista into the role of collisictis in laser spectroscopy of sub-level structures the limitation of the observation time of the active atoms due to narrow-bandwidth optical excitation and simultaneous velocity diffusion can be of importance for a variety of spectroscopic techniques that use a velocity-selective excitation and detection of either sublevel populations or sublevel coherence. On the other hand, the collisional velocity diffusion of sublevel coherence within an optical Doppler distribution can also give rise to new and surprising phenomena as will discussed in the next section. [Pg.181]


See other pages where Lasers rf double resonance is mentioned: [Pg.703]    [Pg.194]    [Pg.938]    [Pg.93]    [Pg.457]    [Pg.882]    [Pg.498]    [Pg.703]    [Pg.194]    [Pg.938]    [Pg.93]    [Pg.457]    [Pg.882]    [Pg.498]    [Pg.301]    [Pg.188]    [Pg.237]    [Pg.470]    [Pg.578]    [Pg.219]    [Pg.427]    [Pg.419]    [Pg.119]    [Pg.153]    [Pg.178]   
See also in sourсe #XX -- [ Pg.444 , Pg.457 , Pg.458 , Pg.468 ]




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