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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 14 — Jul. 2, 2012
  • pp: 16083–16091

Luminorefrigeration: vibrational cooling of NaCs

A. Wakim, P. Zabawa, M. Haruza, and N. P. Bigelow  »View Author Affiliations

Optics Express, Vol. 20, Issue 14, pp. 16083-16091 (2012)

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We demonstrate the use of optical pumping of kinetically ultracold NaCs to cool an initial vibrational distribution of electronic ground state molecules X1Σ+(v ≥ 4) into the vibrational ground state X1Σ+(v=0). Our approach is based on the use of simple, commercially available multimode diode lasers selected to optically pump population into X1Σ+(v=0). We investigate the impact of the cooling process on the rotational state distribution of the vibrational ground state, and observe that an initial distribution, Jinitial=0–2 is only moderately affected resulting in Jfinal=0–4. This method provides an inexpensive approach to creation of vibrational ground state ultracold polar molecules.

© 2012 OSA

OCIS Codes
(020.4180) Atomic and molecular physics : Multiphoton processes
(020.3320) Atomic and molecular physics : Laser cooling

ToC Category:
Atomic and Molecular Physics

Original Manuscript: May 23, 2012
Revised Manuscript: June 22, 2012
Manuscript Accepted: June 23, 2012
Published: June 29, 2012

A. Wakim, P. Zabawa, M. Haruza, and N. P. Bigelow, "Luminorefrigeration: vibrational cooling of NaCs," Opt. Express 20, 16083-16091 (2012)

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