Enhanced radiative recombination rate for electron-hole droplets in a silicon photonic crystal nanocavity

@inproceedings{Ihara2017EnhancedRR,
  title={Enhanced radiative recombination rate for electron-hole droplets in a silicon photonic crystal nanocavity},
  author={Toshiyuki Ihara and Yasushi Takahashi and Susumu Noda and Yoshlhlko Kanemitsu},
  year={2017}
}
We investigate photoluminescence (PL) spectra and dynamics of clean silicon photonic crystal nanocavities at 10 K. A sharp emission peak due to the nanocavity mode has the largest intensity when the energy of the nanocavity mode is equal to the emission energy of the electron-hole droplets (EHD). Time-resolved PL spectroscopy indicates that the PL lifetime of the EHD is reduced to as short as 1.2 ns by the nanocavity mode. A careful analysis of the lifetimes indicates that the radiative… CONTINUE READING