Homemade TEA laser Nitrogen Dye coumarin

[Laser737]

this is rodhamine and not coumarin....

[Alfonatr]

Yes, but the cilincrical lens is very expensive, and the lens normal is good. And with less distance the blue is more powerfull.

I will publish a new laser with more power in a few days.

[CrazyScience]

What you think, does $4 per piece is expensive?

Look at google: surplusshed item l3271

and you will found BK7 glass (not good as fused quartz, but, hey!) cylindric lens for only $4 or $15 for 5 pieces. It is worth buying!

[DarkTemp0]

try using a cilindrical lens like from a laser printer to focus the beam on the dye cavity. You'l get one hell of a dye laser ... more important it will be a blue laser (i love blue)

P.S. nice laser