Octave-spanning supercontinuum generation from sub-millimeter-length integrated gallium phosphide waveguides.

ABSTRACT: Integrated photonic platforms for supercontinuum generation are revolutionizing applications in metrology, imaging, sensing, and ultrafast photonics. Driven by the advantages of integrated nonlinear waveguides, research has focused on developing novel platforms with broad optical transparency, strong nonlinearity, high refractive index, and low fabrication costs. Here, we explore gallium phosphide (GaP) for supercontinuum generation, leveraging its strong second-order and Kerr nonlinearities, broad optical transparency, and low two-photon absorption at telecom C-band. We report the octave-spanning supercontinuum generation in a sub-millimeter GaP waveguide. The generated supercontinuum, when excited with transversely magnetically polarized light, features a gap-free spectrum and high coher

SUBMITTER: Zhang X 

PROVIDER: S-EPMC12630959 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature