I think I have successfully made the DPSS ruby laser worked. Using 405nm high power laser diode, and small ruby (3.5mm diameter and 5mm long), the ruby lased. The following pictures show the result. (the left small red point)
The following is the spectrum figure.
I am a newbie on DPSS, but interrested in visible dioded side pumped solid lasers. I order a Pr YLF crystal (3x3x6mm in size) and use cheap 445nm blue laser (below 1.6 W output). Using cheap mirrors: one flat HR mirror, one concave mirror, and a He-Ne output coupler, to form a V style Resonant...