Possible to Fix beam divergence?

[maxkillz]

Would it be possible to refocus a green laser if it had really bad divergence? at 10 meters the dot is about 8cm wide

 

[steve001]

Would it be possible to refocus a green laser if it had really bad divergence? at 10 meters the dot is about 8cm wide

some more info on the particular laser would help to answer the question

 

[maxkillz]

It's my friends alpha 125, I'll ask him to bring it over when he can. When I saw it the beam starts kinda wide and expands really fast, by the time it goes across my 20ft ish room it's the size of a softball. It burns really well up close though...the furthest we lit a match was about a foot and a half :-/ and that took a while.

 

[artix]

It's my friends alpha 125, I'll ask him to bring it over when he can. When I saw it the beam starts kinda wide and expands really fast, by the time it goes across my 20ft ish room it's the size of a softball. It burns really well up close though...the furthest we lit a match was about a foot and a half  :-/ and that took a while.

Just send it back and ask them to do it. If it is still in warranty, it will probably be free!

 

[maxkillz]

[quote author=maxkillz link=1221769053/0#2 date=1221772317]It's my friends alpha 125, I'll ask him to bring it over when he can. When I saw it the beam starts kinda wide and expands really fast, by the time it goes across my 20ft ish room it's the size of a softball. It burns really well up close though...the furthest we lit a match was about a foot and a half :-/ and that took a while.

Just send it back and ask them to do it. If it is still in warranty, it will probably be free![/quote]
He just got it yesterday so it should be under warrenty.Do you think they could fix it and send back the same one??? It's putting out an average of ~120mW and peaks at around the 140 mark according to the paper it came with. How accurate are those papers anyways?

 

[steve001]

[quote author=Artix link=1221769053/0#3 date=1221789055][quote author=maxkillz link=1221769053/0#2 date=1221772317]It's my friends alpha 125, I'll ask him to bring it over when he can. When I saw it the beam starts kinda wide and expands really fast, by the time it goes across my 20ft ish room it's the size of a softball. It burns really well up close though...the furthest we lit a match was about a foot and a half :-/ and that took a while.

Just send it back and ask them to do it. If it is still in warranty, it will probably be free![/quote]
He just got it yesterday so it should be under warrenty.Do you think they could fix it and send back the same one??? It's putting out an average of ~120mW and peaks at around the 140 mark according to the paper it came with. How accurate are those papers anyways?[/quote]

Sounds like the collimating lens is not in the position for optimal collimation. Call Nova and explain the problem. Ask if adjusting the lens yourself will void the warranty.
A very simple fix.

 

[LRMNmeyer]

[quote author=Artix link=1221769053/0#3 date=1221789055][quote author=maxkillz link=1221769053/0#2 date=1221772317]It's my friends alpha 125, I'll ask him to bring it over when he can. When I saw it the beam starts kinda wide and expands really fast, by the time it goes across my 20ft ish room it's the size of a softball. It burns really well up close though...the furthest we lit a match was about a foot and a half  :-/ and that took a while.

Just send it back and ask them to do it. If it is still in warranty, it will probably be free![/quote]
He just got it yesterday so it should be under warrenty.Do you think they could fix it and send back the same one??? It's putting out an average of ~120mW and peaks at around the 140 mark according to the paper it came with. How accurate are those papers anyways?[/quote]
If you returned it, it would most likely be more power; NOVA is really good about quality control, 120mW from an Alpha125 is actually strange for them, with pen styles, it's usually ~20mW overspec. I would send it in. EDIT: I read 124 as the average. That is REALLY wierd for them, it's a defect.

 

[maxkillz]

finally got him to bring it over, heres a beam shot. the laser is about 15ft away and already the beam is about as big around as my fist

 

[GooeyGus]

yeah thats not right at all. Send it back, they'll fix it and it will probably have more power.

My 125 averaged like 140 and peaked 150