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Ebay items: newbe woes

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psi seeker 34

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I decided to buy several lasers on ebay because of my dissatisfaction with the cheep ones you see in $1 stores all the time. The total casualties include 12 808nm 300mw laser diodes a, 10" HeNe laser tube ,and several cheep red and green laser pointers,(none of which has arrived yet). I was wondering what it would take to combine the beams of several (if not all) of these lasers into one of decent power. :lasergun: I also was wondering if it would be possible or worth the effort to exchange the HeNe gas for Co2 in order to make a low cost Co2 laser. any ideas or advice on how to wire these devices, mod them, safety tips , or special treatment they may require would be helpful.:anyone:
 





psi seeker 34 said:
I was wondering what it would take to combine the beams of several (if not all) of these lasers into one of decent power.:
Click to expand...

why not just buy a higher powered laser (100/200mW) rather than combining lots of 5mW lasers presumably into one and you'd have to buy lots of PBS cubes to combine all of them... pointless to be honest.

stuart :)
 
psi seeker 34 said:
I decided to buy several lasers on ebay because of my dissatisfaction with the cheep ones you see in $1 stores all the time. The total casualties include 12 808nm 300mw laser diodes a, 10" HeNe laser tube ,and several cheep red and green laser pointers,(none of which has arrived yet). I was wondering what it would take to combine the beams of several (if not all) of these lasers into one of decent power. :lasergun: I also was wondering if it would be possible or worth the effort to exchange the HeNe gas for Co2 in order to make a low cost Co2 laser. any ideas or advice on how to wire these devices, mod them, safety tips , or special treatment they may require would be helpful.:anyone:
Click to expand...
You can not remove the Gas from a HeNe Laser and replace
it with CO2 to make a CO2 Laser.....:eek:

The [search] button is your friend.... and there is always
Google Search...


Jerry
 
The easiest set of these to combine would first of all, have to be collimated to infinity. That's when dichros come in handy. But, for your situation, I would just give every pointer mains power and then point them all onto one spot.

:crackup:

It would take lots of work.

Basically, you should consider working with only one wavelength at a time, and getting those modules into more of a lab type setup. Then come back here, and we can figure out the optics and such once we learn what you really have to work with.
 
laserboystuart said:
why not just buy a higher powered laser (100/200mW) rather than combining lots of 5mW lasers presumably into one and you'd have to buy lots of PBS cubes to combine all of them... pointless to be honest.

stuart :)
Click to expand...

The way I figure it it would take over 50 of the 5mw or 200 of the more common (and cheaper) 0.5mw red laser pointers. So I figured that using the pointers was a useless endeavour unless you moded them like in the endless you tube videos that say to defeat the resistor to boost the power (BTW does that work for even a short time before the diode fries itself?).

At any rate I was referring to combining the beams of the 12, 300mw IR diodes which should add up to 3600mw if I could focus them onto one point.

The problem is unless I have a way to combine the beams I would likely get a set up with only one focal point at a set distance like that of a parabolic mirror.

As for the other lasers they are most likely going to be used to make it easier to figure out where the IR lasers are pointed (especially if I manage to make a hand held unit ) :tinfoil:

EDIT: The HeNe laser however is intended to make a cool looking ray gun to impress the trekies
 
Last edited:
psi seeker 34 said:
At any rate I was referring to combining the beams of the 12, 300mw IR diodes which should add up to 3600mw if I could focus them onto one point
Click to expand...

i think 12 (possibly multimode) diodes would be very hard to combine and the beam specs would be horrible. If you was planning to make a strong IR laser, why not get 3 1W diodes or a single 2/3W diode?

stuart :)
 
because I already bought these ones besides if I wasn't doing this just to see if I could,
that is exactly what I would do. For now this is what I have until I trade up.

So if I'm not going to combine these what should I do with them ?
 
I don't know it didn't say on ebay and they haven't arrived yet (though they should in the next few days).
 
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