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  • CLEO/Europe and EQEC 2009 Conference Digest
  • (Optica Publishing Group, 2009),
  • paper CF_P18

Pump-probe measurement of closed loop coherence in a quasi one-dimensional ring crystal using a polarization vortex

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Abstract

Electron in a quasi one-dimensional NbSe3 whisker crystal form a collective state at low temperature. It is called charge density wave (CDW) state. Under certain condition, NbSe3 grows as a ring crystal with closed loop structure [1]. This kind of global structural change brings an effect on a formation of the collective state [2]. For observation of a global electronic property on the entire ring crystal, it is necessary to apply a probe method appropriate for the closed loop structure of a ring crystal. The light with a polarization of a closed loop structure, called a polarization vortex, is appropriate for this measurement.

© 2009 IEEE

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