Atom-resonant squeezed light from a tunable monolithic ppRKTP parametric amplifier.

  title={Atom-resonant squeezed light from a tunable monolithic ppRKTP parametric amplifier.},
  author={J. A. Zielinska and M. Mitchell},
  journal={Optics letters},
  volume={43 4},
We demonstrate vacuum squeezing at the D1 line of atomic rubidium (795 nm) with a tunable, doubly-resonant, monolithic subthreshold optical parametric oscillator in periodically-poled Rb-doped potassium titanyl phosphate (ppRKTP). The squeezing appears to be undiminished by a strong dispersive optical nonlinearity recently observed in this material. 
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