Summary form only given. The use of a cold beam of sodium allows us to probe the angular dependence of the linear polarization case. We have measured the decrease in the ionizing collision rate by monitoring the fractional decrease in photoassociative ionisation (PAI) in a Zeeman-slowed sodium beam. We see that the suppression with light polarized perpendicular to the atomic beam is greater than that with parallel. Increased suppression is observed with increasing intensity of the light.

Conference on Lasers and Electro-OpticsNov 27, 20020 citations

Beam-loss spectroscopy of cold collisions in a bright sodium beam

Jaime Ramirez-Serrano, W. DeGraffenreid, J. Weiner +2 more

Physical Review AApr 9, 20047 citations

Springer eBooks

Polarization-Dependent Spectra in the Photoassociative Ionisation of Cold Atoms in a Bright Sodium Beam

J. Weiner, W. DeGraffenreid, Jaime Ramirez-Serrano

Published Jan 1, 2002• 3 citations

Publisher

DOI: 10.1007/978-1-4615-0115-2_2

Related papers

Photoassociation spectroscopy of cold atoms in a bright atomic beam

Jaime Ramirez-Serrano

Sep 1, 20010 citations

Beam-loss spectroscopy of cold collisions in a bright sodium beam (8 pages)

Jaime Ramirez-Serrano

Physical Review AJan 1, 20040 citations

Polarization-dependent spectra in the photoassociative ionization of cold atoms in a bright sodium beam

Jaime Ramirez-Serrano, W. DeGraffenreid, J. Weiner

We report measurements of cold photoassociative ionization (PAI) spectra obtained from collisions within a slow, bright Na atomic beam. A high-brightness atom flux, obtained by optical cooling and focusing of the atom beam, permits a high degree of alignment and orientation of binary collisions with respect to the laboratory atom-beam axis. The results reveal features of PAI spectra not accessible in conventional magneto-optical trap studies. We take advantage of this high degree of alignment to selectively excite autoionizing doubly excited states of specific symmetry.We report measurements of cold photoassociative ionization (PAI) spectra obtained from collisions within a slow, bright Na atomic beam. A high-brightness atom flux, obtained by optical cooling and focusing of the atom beam, permits a high degree of alignment and orientation of binary collisions with respect to the laboratory atom-beam axis. The results reveal features of PAI spectra not accessible in conventional magneto-optical trap studies. We take advantage of this high degree of alignment to selectively excite autoionizing doubly excited states of specific symmetry.

Physical Review AMay 8, 20026 citations

Photoassociative ionization-rate constant in a sample of ultracold sodium atoms

Vanderlei Salvador Bagnato, Luís Gustavo Marcassa, Y. Wang +3 more

Quantum Electronics and Laser Science ConferenceJan 1, 19930 citations

Polarization dependence of optical suppression in sodium

W. DeGraffenreid, Charles Y. H. Tsao, Y. Wang +2 more

Conference on Lasers and Electro-OpticsNov 27, 20020 citations

Beam-loss spectroscopy of cold collisions in a bright sodium beam

Jaime Ramirez-Serrano, W. DeGraffenreid, J. Weiner +2 more

We report beam-loss photoassociation (PA) spectra of cold collisions within a slow, bright Na atom beam near the ${D}_{1}$ resonance line. The high collimation and brilliance of the atomic beam permits the detection of atomic fluorescence loss resulting from the photoassociation of cold sodium atoms. The results show that even at high PA laser intensities, where strong coupling of the colliding atoms to the optical field might obscure spectral features, vibrational and rotational progressions are surprisingly well resolved. We attribute the conservation of narrow spectral features to the properties of the saturated line shapes and to the unconventional collision energy distribution in one-dimensional (1D) single-beam collisions compared to 3D collisions in a gas cell.We report beam-loss photoassociation (PA) spectra of cold collisions within a slow, bright Na atom beam near the ${D}_{1}$ resonance line. The high collimation and brilliance of the atomic beam permits the detection of atomic fluorescence loss resulting from the photoassociation of cold sodium atoms. The results show that even at high PA laser intensities, where strong coupling of the colliding atoms to the optical field might obscure spectral features, vibrational and rotational progressions are surprisingly well resolved. We attribute the conservation of narrow spectral features to the properties of the saturated line shapes and to the unconventional collision energy distribution in one-dimensional (1D) single-beam collisions compared to 3D collisions in a gas cell.

Physical Review AApr 9, 20047 citations

We report beam-loss photoassociation (PA) spectra of cold collisions within a slow, bright Na atom beam near the

{D}_{1}

resonance line. The high collimation and brilliance of the atomic beam permits the detection of atomic fluorescence loss resulting from the photoassociation of cold sodium atoms. The results show that even at high PA laser intensities, where strong coupling of the colliding atoms to the optical field might obscure spectral features, vibrational and rotational progressions are surprisingly well resolved. We attribute the conservation of narrow spectral features to the properties of the saturated line shapes and to the unconventional collision energy distribution in one-dimensional (1D) single-beam collisions compared to 3D collisions in a gas cell.