Is there something wrong with my laser ?

[MysteryFX]

Dear sirs,

We have a Laserworld RGB laser and the red laser module produces a square form beam, instead of the others that produce a nice tiny spot.
You see also when we make the color yellow a yellow dot with a red glow around it.

I have added some pictures of this:



Thank you in advance!

Kevin

[WookieBoy]

Hi Kevin.

Where in the world are you? If you fill in your location, it might help someone more local offer you advice.

However, as it's got LaserWorld stamped on it, I'd say that the red is most likely a stacked knife edge module and so this would produce a square beam. They do this to keep the cost down I believe. So no, this is probably how it's built...

LaserWorld generally don't have a good reputation on here I'm afraid due to the fact we hear soooo many complaints about their build quality, under specified components and "massaged" power ratings...

[norty303]

It's more likely a 650nm module which are characterised by a square and large beam. I had a 1W CNI module tha was exactly as you describe

[MysteryFX]

Thanks for the quick responses! It is indeed a 500mW/650nm, alltrough it should be that. I cannot measure laser output power too bad. What did you do with your laser module ? Is there some way to correct this with optics ?
By the way, im from the netherlands! I'm feeling myself nailed right now by laserworld when i read all thos posts about it.

[Bradfo69]

Unfortunately no. With 650, it is what is is, I'm afraid. I've asked.... as have many of us. Only thing I did on one of mine was to mask it to a small circle but, you're also losing that power in the process.

[norty303]

No, there isn't generally anything you can do to improve a square 650 beam. That's pretty much as good as they get. I don't think Laserworld are at fault here, they just build the laser to a price. If you want a smaller beam red you have to pay more money. This is why we recommend people understand characteristics of different lasers before making purchases, so that they can evaluate what they will receive

[MysteryFX]

Never mind, thank you all for the help !