Superradiant control ofγ-ray propagation by vibrating nuclear arrays Academic Article uri icon

abstract

  • The collective nature of light interactions with atomic and nuclear ensembles yields the fascinating phenomena of superradiance and radiation trapping. We study the interaction of γ rays with a coherently vibrating periodic array of two-level nuclei. Such nuclear motion can be generated, e.g., in ionic crystals illuminated by a strong driving optical laser field. We find that deflection of the incident γ beam into the Bragg angle can be switched on and off by nuclear vibrations on a superradiant time scale determined by the collective nuclear frequency Ωa, which is of the order of terahertz. Namely, if the incident γ wave is detuned from the nuclear transition by frequency ΔΩa it passes through the static nuclear array. However, if the nuclei vibrate with frequency Δ then parametric resonance can yield energy transfer into the Bragg deflected beam on the superradiant time scale, which can be used for fast control of γ rays. © 2013 American Physical Society.

published proceedings

  • Physical Review A

author list (cited authors)

  • Zhang, X., & Svidzinsky, A. A.

publication date

  • January 1, 2013 11:11 AM