Quadratic phase matching in slot waveguides.
We analyze phase matching with reference to frequency doubling in nanosized quadratic waveguides encompassing form birefringence and supporting cross-polarized fundamental and second-harmonic modes. In an AlGaAs rod with an air void, we show that phase-matched second-harmonic generation could be achieved in a wide spectral range employing state-of-the-art nanotechnology.
Di Falco
Andrea
A
NooEL-Nonlinear Optics and OptoElectronics Lab, University Roma Tre, Rome, Italy.
Conti
Claudio
C
Assanto
Gaetano
G