Skip to main content
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.

Two-Color Photoassociation Spectroscopy of the Lowest Triplet Potential of Na2



L E. de Araujo, J D. Weinstein, S D. Gensemer, F K. Fatemi, Kevin Jones, Paul D. Lett, Eite Tiesinga


We have performed a type of Autler-Townes spectroscopy to locate a number of rovibrational hyperfine levels of the a ^3^ς+u potential, the lowest triplet potential of the Na2 dimer. The spectroscopy starts with the photoassociation of ultracold atoms in a magneto-optical trap. We have measured the binding energies of approximately 100 individual states spanning the vibrational levels Ņ=8-15 of this potential (binding energies up to 27 cm-1). We obtain a typical accuracy of 15 MHz and a typical resolution of {difference} 20 MHz, improving on the 10 GHz accuraxy and 30 GHz resolution previously available for the vibrational states Ņ
Journal of Chemical Physics
No. 4


atomic collisions, hyperfine structure, laser cooling, molecular spectroscopy, photoassociation, Raman spectroscopy, sodium dimers, spectroscopy


de, L. , Weinstein, J. , Gensemer, S. , Fatemi, F. , Jones, K. , Lett, P. and Tiesinga, E. (2003), Two-Color Photoassociation Spectroscopy of the Lowest Triplet Potential of Na<sub>2</sub>, Journal of Chemical Physics (Accessed May 27, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created July 1, 2003, Updated February 17, 2017