Lasing from a circular Bragg nanocavity with an ultrasmall modal volume

  title={Lasing from a circular Bragg nanocavity with an ultrasmall modal volume},
  author={Jacob Scheuer and William M. J. Green and Guy A Derose and Amnon Yariv},
  journal={Applied Physics Letters},
We demonstrate single-mode lasing at telecommunication wavelengths from a circular nanocavity employing a radial Bragg reflector. Ultrasmall modal volumes and submilliwatt pump thresholds level are observed for lasers with InGaAsP quantum well active membrane. The electromagnetic field is shown to be tightly confined within the 300 nm central pillar of the cavity. The quality factors of the resonator modal fields are estimated to be on the order of a few thousands.microcavity lasers… 

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  • J. Scheuer, A. Yariv
  • Physics
    Physical review. E, Statistical, nonlinear, and soft matter physics
  • 2004
Good agreement is found between the analytical and the numerical results obtained by finite-difference time-domain simulations of a new class of circular resonators based on a radial photonic crystal reflector.