Wavelength conversion via four-wave mixing in a triple-coupled multilayer cavity

Four-wave mixing in a triple-coupled multilayer cavity has been investigated for planar-type wavelength conversion devices. Three half-wavelength cavity layers are connected in series using GaAs/AlAs distributed Bragg reflector multilayers to yield three cavity modes with equal frequency separation. The enhanced internal electric fields of the three cavity modes indicate that efficient ultrafast wavelength conversion via four-wave mixing can be achieved even in the normal incidence configuration. Wavelength conversion was experimentally demonstrated using spectrally shaped laser pulses. A clear converted wavelength signal was observed in the measured spectrum. The temporal response was almost limited by the photon lifetime of each cavity mode. (C) 2013 AIP Publishing LLC.