Laserworld CS-400RGY repair, help please!

[cyaniron]

I have decided to ditch the beam combiner, and I have ordered some open can diodes from hightechdealz.com (http://hightechdealz.com/index.php?m...&products_id=1). If these live up to expectation (http://img501.imageshack.us/img501/6...roundupod4.png), then the lasers should be powerful enough for me without needing the cube, and it should be less effort to reassemble the laser.

I'll post the results here, watch this space........

[allthatwhichis]

Swap the cube for a dichro and put a blu-ray in there for RGV...

[cyaniron]

Re:RGV. I was thinking about doing that, but I figured that I would have to mix the green with one of the other 2 frequencies first. Green is in between the bluray and the red. I assume the dichro's work like a high pass/low pass filter, or do they work like bandpass?.

[sugeek]

Re:RGV. I was thinking about doing that, but I figured that I would have to mix the green with one of the other 2 frequencies first. Green is in between the bluray and the red. I assume the dichro's work like a high pass/low pass filter, or do they work like bandpass?.

The 405nm dichro I have is reflect 405 pass all other colors, it was designed to add in a 405nm after your R/G/B. So with Two dichros a reflect green pass red/blue (yes I know there is no blue in your projector). A couple of people sell the 405nm dichro here on the board depending on your location, you can choose where to order from.

-Adam

[cyaniron]

Wow, cool!, I am almost sold on the RGV idea
I was thinking that it would require moving the green diode, drilling holes, (a lot of work, and plenty of potential to ruin whats left of my lasers!). Is the dichro that is in there (pass green, reflect red) likely to reflect violet too?.

[sugeek]

Wow, cool!, I am almost sold on the RGV idea
I was thinking that it would require moving the green diode, drilling holes, (a lot of work, and plenty of potential to ruin whats left of my lasers!). Is the dichro that is in there (pass green, reflect red) likely to reflect violet too?.

I forgot to look at the picture in the first post, it may or may not reflect the 405nm and I am not sure about the loss amount. One thing to note if you do use a 405nm diode, it requires a different voltage than the Red lasers. You don't have much space in that little guy, but your next projector can be an RGV when you build it.

-Adam

[cyaniron]

Ah, an extra 2 dichro's, and a new power supply/TTL circuit for each laser on top of the diodes kind of unsells the RGV idea for me!. I have ordered 5 red diodes, so I still have the option of using the cubes after twisting them a little, if I change from my current plan of removing the cubes, and having 1 red diode in each. I have some little (40mm x 40mm) 12v fans that Ill probably mount by them to aid cooling. If I dont pop any diodes, I'll also have some left overs to build a ~400mw burning laser to have a mess with (2 mounting assemblies, 2 psu's, 2 diodes and a cube)

[sugeek]

Ah, an extra 2 dichro's, and a new power supply/TTL circuit for each laser on top of the diodes kind of unsells the RGV idea for me!. I have ordered 5 red diodes, so I still have the option of using the cubes after twisting them a little, if I change from my current plan of removing the cubes, and having 1 red diode in each. I have some little (40mm x 40mm) 12v fans that Ill probably mount by them to aid cooling. If I dont pop any diodes, I'll also have some left overs to build a ~400mw burning laser to have a mess with (2 mounting assemblies, 2 psu's, 2 diodes and a cube)

Actually just a new driver if you use a flexmod, well beside the optics fun stuff. You do have two of the units so maybe use the parts and make an RGV in a different case.

-Adam

[cyaniron]

My new red diodes are fitted. I was wondering what angle to set the cube. Before, it was pretty much 90 degrees to the beam. Should I move it by say 1 degree, ie just a tiny amount, or by something more substantial like 5, or 10?.

[hobbybob]

Hi Cyaniron,

What is important to know is that to successfully use the PBS cube you have to make sure that 1 diode is horizontally polarized and the other one is vertically.
If you keep a white paper in front of your diode you can sometimes see a very small line running "through" the dot. Make sure one is horizontally and the other is vertical.
You could also look in the mountingbarrels and watch the legs of the diode.

Suppose one looks like:
0 0
.0

Then make sure the other is fitted like this:
0
.0
0

(I USED THE dots for spacing, the layout got screwed because i do something wrong).
But the zeros mean the diodes legs, seen from behind.


Then you have a 90 degree corner. If you loosen one of the barrels and turn slowly you should see the output decrease and increase if you come close to the 90 degree mark. if you keep turning power decreases again...
Hope this helps.