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My first RGB laser *update*

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--- Update at the bottom ---


Hi all, yesterday I spend the whole day at building my RGB laser.
It is not perfect. I have to do some fine tunig on it, but I think it is still worth to post it ;).
My camera doesn't pick up all colors right, some photos may not look like in real.

The blue diode is a M140 at about 1A
The red is a M!t$ub!sh! at about 700mA. It doesn't run at full power because the green is to weak. The beam is really big but I don't have a simgle mode red diode :/.
And the green DPSS is 85mW out of a pointer. (To weak for this build :/ )
I have got the diodes from DTR, thanks! :)

First I had to build the driver for the diodes.
This is the driver for the blue diode. I messed it up while I tried to cut the PCB but I was able to fix it. Btw: this are the first drivers I build on my own ;)



Here is the driver of the red diode. It looks much better then the other ^^.



Both together ...




So let's put all together. This is the final build. I have only to build a little lm317 circuit for the green DPSS. It needs 3V and I power it up with 7,5V out of a computer PSU.



So here are some beamshots. I can't get a real white. I think this is because the beams of the red and blue diode are so big and the green is really small. On a wall the dot is pretty white, but still not perfect.
But the colors are actually really cool.

This should be a white beam. But it is only in the middle of the beam. Aound the beam there is a magenta color. The beam of the green is too small and a bit too weak.



Here is the dot on a white wall. In real it looks quite white.




Here is a shot of a orange shot. I really like it. It looks much better than the "white"



I have changed the resistor before the driver. So the red is now a bit weaker and I get a really cool yellow color ^_^. Here you can really see that the red diode has a huge beam.



This is the blue diode with the green DPSS. It looks like only a 445nm laser on the picture but in real there is a really cool blue color, especially the dot.


Maybe the will come updates but I'm not shure. I hope you like it!
cheers :beer:


Update 1:
I have took a shot with a bit of fog. There is white light! But only in the middle :/. I think if I will have single mode diodes I will use them.
 
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Windforce

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Re: My first RGB laser :)

Very good simple build:) You should deffinitely get more powerful green module. Where did you get that dichros from?
 
Last edited:
Joined
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Re: My first RGB laser :)

Thanks :). I've got them from DTR. They were in the optics kit he sells.
 




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