Spectral Characteristics of an Integrated Type-I Parametric Down-Conversion Source

In this work, a Research team at the University of Paderborn spectrally characterized a nondegenerate Type-I PDC source in Titanium-indiffused periodically poled Lithium Niobate (Ti:PPLN), where a pump photon at 532 nm polarized along the extraordinary crystal axis decays into two photons with the same polarization at around 800 and 1575 nm respectively.