I'm trying get some higher power red by combining several red LD's.
I know that when I have two polarized beam, I can combine them with a polarizing beam splitter. Not that hard.
But that alows in my case the combination of two 100mW diodes.
Then I heard of stacking beams of the same polarisation. This means they are aligned next to each other. The only problem I have, is how to stack them.