NOT KNOWN FACTS ABOUT PPKTP CRYSTAL

We have now bought SPDC810 and hoped to utilize polarization-entangled photons initially. But It appears this device does not have polarization-entangled photons. I wonder if you may update/modify our SPDC810 to make it emit entangled photons.The spectral brightness is the pair-era price for every optical pump electric power P for every photon band