I think everyone's forgetting just how difficult aligning a DPSS is.
yes BF, you'r right. But i saw how it was easy to got 532 nm with a pump and ndyag+ktp glued. In this setup we just needed to find the correct orientation of diode to the Nd: yag to have the max output (ndyag is sensitive to polarization of the pump).
Here the major problem is that the crystal are not glued together (yag+bibo) they are separate, we must find the "phase matching" plus, the conversion efficiency is lower than KTP so we need high pump power which mean "active cooling" for the pump and cristal... and we must deal with lens too...... no words to the mirror output too...
in this experience we need high precision tool (that can carry the crystal (we can't touch them because we can destroy the coating), and that can rotate them) too much difficult ??
But it's... research ! so fascinating and also so....disappointing! (+$$$), theory is far far far away from practice, but i think we could do it with HUGE time....
i will ask my teacher about some homemade DPSS;
HENRYSTAL Can you take a photo of a WORKING unit like your diagram ? have you ever tried to align them ?? please tell us !
, so if you make a low power 473,the bibo is better ,i
low power mean 70-100 mw ?