Optical microcavities

@article{Vahala2003OpticalM,
  title={Optical microcavities},
  author={Kerry J. Vahala},
  journal={Nature},
  year={2003},
  volume={424},
  pages={839-846}
}
Optical microcavities confine light to small volumes by resonant recirculation. Devices based on optical microcavities are already indispensable for a wide range of applications and studies. For example, microcavities made of active III–V semiconductor materials control laser emission spectra to enable long-distance transmission of data over optical fibres; they also ensure narrow spot-size laser read/write beams in CD and DVD players. In quantum optical devices, microcavities can coax atoms or… 

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