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1-2W CO2 laser

Nivanio

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Hello, i'm finding quite hard to find a CO2 laser with 1-2W output power...

Anyone know where i can find one?

I'm gonna use it in research for evoked potential, so i would need them cabled.. But i think it would be too expensive, right?
Or would be more expensive if i try to cable it myself?


Thank for you help, and sorry about that, don't know much about laser >.<
But i will try to learn xD
 

RA_pierce

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Try searching for higher powers. Typically I see them in powers greater than 10W.
If you want a 1-2W laser it's best and probably much cheaper to stay with solid state lasers.

E-bay has some CO2 laser tubes, but not normally a complete unit.
 
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The lowest I've ever seen is 4W.

Also in many cases you will pay the same for a 4W tube as you will for a 10W tube since the tube length is not much different between the two.
 
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Sure, within reason, you just need to have the minimum operating voltage and strike voltage. That's why you find power supplies that are matched to the tubes.
 

Nivanio

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But i will use them to research, at humans, i won't use a 10W at someone..

And i need a co2 because the reflection is lower than solid ones...

i'm usingtit for evoked potential
 

Cyparagon

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VillageIdiot said:
Is it possible to run a higher rated tube at a lower current?
It certainly is. I could run my 60W at powers that appeared to be 200mW. I never measured it, but it would barely light a match when focused.

Obtaining a 10W system and running it at lower currents is not only one of your only options, but it should increase the life of the laser as well.
 

Murudai

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Cyparagon said:
but it should increase the life of the laser as well.
Really, running a 10W at 1W? I would of thought it would be too low to be safe for laser life.

I mean for example, driving a car. Driving it at lower and lower revs doesn't necessarily decrease wear on the engine, it'll just stall it :) And that's pretty bad.
 

Cyparagon

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I'm not certain cars are the best analogy to lasers, but I can play along.

IF you stall it, yes. Argons are a good example of this. Argons only have an idle setting because the medium must be ionized and a current lower than 3-4A or so (in small heads) will impede the perpetuation of the ionization, and will "stall" it. Just about all other lasers have a much lower threshold. A 200mW red driven at 20mW will probably run forever.

When a printing company required a comparatively long life from argons, a common practice was to purchase a system rated for 50mW and only use 5mW of it.
 

Murudai

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Yeah, I know diodes lasers can run forever at low power.

But don't you need a certain amount of juice being pumped in to a CO2 before it'll work at all? And surely the amount of juice you'd need to put in would be enough to kick it up to a decent output.

I don't really know, gas lasers aren't my forté, just curious :)
 

Nivanio

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But is kind dangerous to point a 10W at someone, so i would prefer one with 1-2W, but seems like it's really hard to find one. >.<

and CO2 laser really have a less reflection than diode laser, right?
 

Nivanio

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But we will make a system control for it, so the output will be much lower, but if something fails, its better to be hit with a 1W than a 10W
 

diachi

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It's not good to hit a person with either :p just get a 10W and turn the 'juice' down at the power supply, it should be ok then, aslong as its not like anything too strong.
 
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I don't think it would be safe to hit a person with a CO2 laser of any power, especially over a watt, unless you sufficiently expand the beam to reduce the power density. I have a 20 watt CO2 and if I run the beam thru a focusing lens at about half power, about five feet away from the laser or so the beam has expanded to a point that it just feels like a warm spot in the air, like holding your hand near a hair dryer.
Of course I stuck a piece of paper in the spot before I put my hand in it - human flesh absorbs the CO2 wavelength almost 100% so even lower powers can be very dangerous, not only to the eyes to but to skin.
 




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