Opportunities for visible supercontinuum light generation in integrated diamond waveguides.

We numerically show the advantages of using diamond-on-insulator (DOI) waveguides to design compact supercontinuum (SC) light sources for the visible (VIS) wavelength range. We conclude that the DOI platform is more suitable than silicon nitride waveguides for tailoring the dispersion in such a way that a zero-dispersion wavelength (ZDW) is obtained in the VIS, as is required to achieve efficient VIS SC generation (SCG). After designing a DOI waveguide that features a ZDW at ∼600  nm, we exploit it to numerically obtain a smooth SC ranging from 453 nm to 1030 nm above the -30  dB point after propagation over 4 mm.