Making ultracold molecules in a two-color pump-dump photoassociation scheme using chirped pulses

Christiane P. Koch, Eliane Luc-Koenig, and Françoise Masnou-Seeuws
Phys. Rev. A 73, 033408 – Published 7 March 2006

Abstract

This theoretical paper investigates the formation of ground state molecules from ultracold cesium atoms in a two-color scheme. Following previous work on photoassociation with chirped picosecond pulses [Luc-Koenig et al., Phys. Rev. A, 70, 033414 (2004)], we investigate stabilization by a second (dump) pulse. By appropriately choosing the dump pulse parameters and time delay with respect to the photoassociation pulse, we show that a large number of deeply bound molecules are created in the ground triplet state. We discuss (i) broad-bandwidth dump pulses which maximize the probability to form molecules while creating a broad vibrational distribution as well as (ii) narrow-bandwidth pulses populating a single vibrational ground state level, bound by 113cm1. The use of chirped pulses makes the two-color scheme robust, simple, and efficient.

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  • Received 12 August 2005

DOI:https://doi.org/10.1103/PhysRevA.73.033408

©2006 American Physical Society

Authors & Affiliations

Christiane P. Koch1,2,*, Eliane Luc-Koenig1, and Françoise Masnou-Seeuws1

  • 1Laboratoire Aimé Cotton, CNRS, Bât. 505, Campus d’Orsay, 91405 Orsay Cedex, France
  • 2Department of Physical Chemistry and The Fritz Haber Research Center, The Hebrew University, Jerusalem 91904, Israel

  • *Electronic address: ckoch@fh.huji.ac.il

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Vol. 73, Iss. 3 — March 2006

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