Difference between revisions of "LaserCooling"

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Two-stage cryogenic buffer-gas cooled beams are an excellent precursors to laser cooling experiments as the thermal velocities of the atoms or molecules being cooled are comparable to the depth of traps (e.g., magneto-optical traps) [1-2].  In molecular systems, the buffer-gas cooled
 
Two-stage cryogenic buffer-gas cooled beams are an excellent precursors to laser cooling experiments as the thermal velocities of the atoms or molecules being cooled are comparable to the depth of traps (e.g., magneto-optical traps) [1-2].  In molecular systems, the buffer-gas cooled
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beams are relevant as well because they quench internal degrees of freedom (e.g., rotational) and thus create a large number of molecules in the ground state. Recently, warm buffer-gas cooling techniques have been used to demonstrate the laser-cooling of a molecular species [3-4].  We are examining how to perform laser cooling of an atomic (Yb, Li) and molecular (CaF) beams from a slower two-stage cell design. Specifically, we are interested in using such a laser cooled beam to load traps.
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beams are relevant as well because they quench internal degrees of freedom (e.g., rotational) and thus create a large number of molecules in the ground state.  
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'''Laser Cooling of Atoms'''
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'''Laser Cooling of CaF'''
  
 
== References ==
 
== References ==

Revision as of 18:20, 30 May 2013

People

Post Docs

  • Boerge Hemmerling

Grad Students

  • Garrett Drayna
  • Eunmi Chae
  • Aakash Ravi
Yb blue MOT in our experiment. We have loaded a MOT from a slow buffer-gas beam source. We also can test the effects of a cold buffer-gas beam on MOTs.

Overview

Schematic in experimental plan for laser cooling of atoms and molecules

Two-stage cryogenic buffer-gas cooled beams are an excellent precursors to laser cooling experiments as the thermal velocities of the atoms or molecules being cooled are comparable to the depth of traps (e.g., magneto-optical traps) [1-2]. In molecular systems, the buffer-gas cooled beams are relevant as well because they quench internal degrees of freedom (e.g., rotational) and thus create a large number of molecules in the ground state.


Laser Cooling of Atoms


Laser Cooling of CaF

References

  • [1] Hsin-I Lu, Julia Rasmussen, Matthew J. Wright, Dave Patterson, and John M. Doyle. Phys. Chem. Chem. Phys., 2011, DOI: 10.1039/c1cp21206k.
  • [2] D. Patterson and J.M. Doyle. J of Chem Phys 126, 154307 (2007).
  • [3] E. S. Shuman, J. F. Barry, D. R. Glenn, and D. DeMille, Phys. Rev. Lett. 103, 223001 (2009).
  • [4] E. S. Shuman, J. F. Barry, and D. DeMille. Nature 467, 820 (2010).
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