Has anyone measured the divergence of a 405nm single mode laser?

[Alaskan]

Has anyone here measured the divergence of their 405nm single mode laser pointer with a lens similar to a G2, especially the 16X one DTR sells?

 

[VisibleGreen]

I don't think anyone felt the need to since it's single mode. A guy on here actually showed his build burning his wallet at like 50 feet I think it was? So it's pretty darn good. Let me look for that thread and get back to you.

Found it. 90 feet!
http://laserpointerforums.com/f44/1w-405nm-laser-burning-90-feet-away-test-update-post-9-a-90020.html

 

[Alaskan]

Thanks, I kept googling and finally found a reference to a 405nm build someone did with a divergence of 1.0 mRad I was hoping a single mode would be less at 405nm without a beam expander.

 

[joeyss]

I heard them of some 405 dioides being under 1 mrad. But heck you could make a 900mw 405nm now and make a 2x beam expander and well balloons will hate you for this one weird trick.