Do I sense a change of tone in your words? 
I believe, that the divergence of 473 and 532nm are the worst due to the conversion of the KTP crystal from IR to visible coherent light. Unlike 650 and 405nm, the beam is not so easily collimated. That's why you don't see green or blue in your CD ROMs. Not to mention the mW power loss by this. One day (I believe very soon), there will be 532 and 473nm laser diodes in mass production. That will be a glorious day, the divergence will be excellent and the power, oh, imagine the power! Imagine an RPL 532nm 2.4W!
I believe, that the divergence of 473 and 532nm are the worst due to the conversion of the KTP crystal from IR to visible coherent light. Unlike 650 and 405nm, the beam is not so easily collimated. That's why you don't see green or blue in your CD ROMs. Not to mention the mW power loss by this. One day (I believe very soon), there will be 532 and 473nm laser diodes in mass production. That will be a glorious day, the divergence will be excellent and the power, oh, imagine the power! Imagine an RPL 532nm 2.4W!
