LITTLE KNOWN FACTS ABOUT PPKTP CRYSTAL.

We've acquired SPDC810 and hoped to utilize polarization-entangled photons to start with. But It appears this device does not have polarization-entangled photons. I'm wondering if you could potentially update/modify our SPDC810 to make it emit entangled photons.Can it be attainable to ask for a minimal tuning of the middle wavelength of the source.