Single Mode RGB Diode Balance

[Fearless]

Eric,
I have a quad driver from lasertack. I'll bring it up with me on Sat so you can take a look at it.
Rick

[planters]

Rick,

Thanks, I'll look at it. And, you can look at the shelves and shelves of lasers...candy store!

[logsquared]

Did you use the Optima 4mm for all the diodes? I have a lot of these.

Yes. The blue spot is a bit smaller than the rest but a very slight defocus makes a really close match. The spots are good but could benefit from some filtering for ion like perfection.

[planters]

Then I am closer and closer. Do you have these modules available?

[chad]

Hi Planters. Just a thought on the voltage issue. You could use a small dc-dc converter and get the voltage down lower. Then you wouldn't have to make all of that heat in the driver fet. Also I have been driving my green diode at about 93 mw or about 250ma or so, I would have to look again but everything is running fine.
You won't need to do any beam cleaning. The output looks great!

Chad

[Fearless]

Hi Eric,
Looking forward to making the pilgrimage to North Country Lasers!
Rick

[logsquared]

Do you have these modules available?

I have a few of the first prototype machined right now. I wanted to remake the base with ears because of the over tightening problem mentioned in the post. If you want to try one sooner than later I could counter bore the mounting holes so the whole mount isn't "squeezed" by the mounting bolts. Also, I could mill some slots for lens adjustment on the bottom side. I am currently adding on to my shop and probably won't get to machining whole new bases for a week or so. But, it would only take a minute to make the above modifications. Since you already have the lenses I wouldn't have to make those. Let me know if you want to try it.