Two Beams

[Mosc007]

I have 3 of 50mw Green laser modules extracted from Disco Laser Shows.

I noticed the other night that one of the Modules has 2 separate Beams in the output.

It was hard to notice at first as the separation of the 2 beams occurs very slowly. It's not noticeable until the beam is about 200-300 meters away. Looking down the beam I can see two separate, Fully Collimated beams.

I was wondering what causes this ?


Charles

 

[jimdt7]

Probalby the crystals are misaligned !
Sorry to tell you, but you cant fix that

Jim

 

[Mosc007]

Thanks for the Info.

I wasn't to worried about fixing it. I have 2 others that are fine. I was more curious as to what would cause it.


Charles

 

[jimdt7]

Probalby because the quality of the module
isn't very good.
Except if you have dropped it.
Where did you extracted these from ? (Link please)

Jim

 

[Mosc007]

It has not been dropped. At least not since I bought the Laser Light show. It was new.

They are Modules I have removed from Rave 50mw Green Twinkle Laser Light shows.

The Diode Module is well heatsinked. They must be reasonable quality as they are rated for Continuous operation. But maybe a Quality control problem installing the xtals.

It's only noticeable when the beam is about 300 Meters away. So one could call it a minor defect. Still cuts black electrical tape up close.


Charles