U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by:

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 226 - 250 of 302

Trapping Atoms With Evanescent Light Fields From Integrated Optical Waveguides

January 1, 2001
Author(s)
J P. Burke, S T. Chu, Garnett W. Bryant, Carl J. Williams, P S. Julience
We theoretically investigate three approaches to trapping atoms above linear integrated optical waveguides. A two-color scheme balances the decaying evanescent fields of red-and blue-detuned light to produce a potential minimum above the guide. A one-color

Ground State Scattering Lengths for Potassium Isotopes Determined by Double-Resonance Photoassociative Spectroscopy of Ultracold 39 K

November 1, 2000
Author(s)
Haonan Wang, A N. Nikolov, J R. Ensher, P L. Gould, E E. Eyler, W C. Stwalley, J P. Burke, J L. Bohn, C H. Greene, Eite Tiesinga, Carl J. Williams, Paul S. Julienne
We use double-resonance photoassociative spectroscopy of ultracold 39K atoms to precisely determine the triplet a 3Σ scattering length for the various isotopes of potassium. Photoassociation of free 39K atoms to the pure long-range 0 (v' = O, J' = 2) level

Collision Properties of Ultracold 133 Cs Atoms

September 1, 2000
Author(s)
P J. Leo, Carl J. Williams, Paul S. Julienne
We present a theoretical analysis of numerous magnetically tunable Feshbach resonances measured by Vladan et al. at fields of up to 25 m T. This analysis provides the most accurate characterization of the collisional properties of ground state Cs atoms

Interacting Atoms Under Strong Quantum Confinement

June 1, 2000
Author(s)
Eite Tiesinga, Carl J. Williams, F H. Mies, Paul S. Julienne
We calculate the energy level shifts of a tightly-confined trapped alkali atom in the presence of a second trapped atom. A complete microscopic description of the interaction energy between the two atoms is used. This allows us to study tightly-confined

Four-Wave Mixing With Multiple Spin States

February 1, 2000
Author(s)
J P. Burke, Carl J. Williams, Paul S. Julienne, Y B. Band, M Trippenbach
Four-wave mixing is a common process in nonlinear optics wherein the nonlinear interaction between light and matter allows three light waves to interact or mix and produce a fourth wave with a different central wavevector (and/or frequency). The

Ultracold Matter - Molecules at Rest

February 1, 2000
Author(s)
Carl J. Williams, Paul S. Julienne
In this issue (1), a group from the University of Texas reports producing rubidium dimers that are essentially at rest, by assembling them from ultracold Rb atoms in an atomic Bose-Einstein condensate (BEC). The report (see page 1016) contains several
Was this page helpful?