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Optica Publishing Group
  • International Quantum Electronics Conference
  • 1996 OSA Technical Digest Series (Optica Publishing Group, 1996),
  • paper ThM1

Critical coherence in cooperative photon-atom interactions

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Abstract

Rare earth ions typically interact weakly with one another, even if they are nearest neighbors in a crystal. The inter-atomic coupling strength is generally insufficient to cause strong delocalization of optical excitation. This simply means that while many ions engage in non-radiative population dynamics as the result of coupling to other dopant ions, there is very little spatial coherence in their interactions. However, in every interaction between atoms and lasers, considerable optical coherence can be generated, and its dephasing rate can govern the population dynamics in a surprisingly critical way in dense systems.

© 1996 Optical Society of America

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