Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

100 WATT LASER $31 WORTH IT?!?!






Joined
Jul 27, 2007
Messages
3,642
Points
63
you get the bar for mounting, then the actual laser diode chips and some solder, you have to then precision mount the diodes to the bar which i've been told is a royal pain in the ass. taken from the ebay auction
"If you have mounted a diode chip before, you will most likely find mounting a whole bar even easier (as they dont blow away if someone sneezes on the other side of the room) as long as you are carefull to ensure good solder wetting to avoid voids. An acomplished enthusiast could expect to get 3w of green without too much trouble out of a side pumped rod DPSS, although this is obviously not a project suitable for your average first time experimenter."
 
Joined
Oct 28, 2007
Messages
2,631
Points
48
MarioMaster said:
you get the bar for mounting, then the actual laser diode chips and some solder, you have to then precision mount the diodes to the bar which i've been told is a royal pain in the ass. taken from the ebay auction
"If you have mounted a diode chip before, you will most likely find mounting a whole bar even easier (as they dont blow away if someone sneezes on the other side of the room) as long as you are carefull to ensure good solder wetting to avoid voids. An acomplished enthusiast could expect to get 3w of green without too much trouble out of a side pumped rod DPSS, although this is obviously not a project suitable for your average first time experimenter."

what is this "bar"? does it collimate? does it drive? I need more info...
 
Joined
Jul 27, 2007
Messages
3,642
Points
63
you probably won't be able to collimate it to a beam easily, since you are essentially taking a bunch of tiny IR diodes and mounting them into a big array, but if you did manage to wire it properly then you just need to mount it on a big heatsink and power it up at probably 2-4 volts or so at a ton of amps

so essentially they're good for pumping another medium or burning but not for collimating into a beam
 
Joined
Oct 28, 2007
Messages
2,631
Points
48
MarioMaster said:
you probably won't be able to collimate it to a beam easily, since you are essentially taking a bunch of tiny IR diodes and mounting them into a big array, but if you did manage to wire it properly then you just need to mount it on a big heatsink and power it up at probably 2-4 volts or so at a ton of amps

so essentially they're good for pumping another medium or burning but not for collimating into a beam

i see...
 

Things

0
Joined
May 1, 2007
Messages
7,517
Points
0
so you have to solder all the individual diodes to the bar??? If so, that would be VERY VeRY hard. Ad as MM said, these aren't for beams, they are for pumping crystals like in greenies, if you are expecting a 100W beam that can burn stuff from 200M, forget it with this bar.
 
Joined
Oct 24, 2006
Messages
2,032
Points
0
Its a diode bar of that you need to mount onto a block of copper, which will act as both an electrical connection and heatsink. Not a task to be taken lightly by any measure. That auction will probably end for ~$200 and its a good $200 down the drain unless you know exactly what you're doing. Even if you know what you're doing, you'll need a lot of luck on your side. You can get them ready to go (IE, ready to be powered and heatsinked) as mounted diode arrays, just cost a bit more. I'll sell you a 20W mounted array for <$200 :p (tis Coherent's IIRC)
 
Joined
Nov 18, 2007
Messages
24
Points
0
lol this title was a bit misleading...but after reading the link i understand now.
so you can use this to create a laser of this power? not bad for 31 bucks, although idk how hard it would be to do...
 
H

High_Octane

Guest
Heres one with the heat sink and a TEC built in and ready to go. The only bad thing is you don't know the mw. I bought one and it works. I'm currently waiting for a lens that will focus the beam.
It burns stuff, but it must be held close to the end of the fiber optics.
http://cgi.ebay.com/Laser-Diode-836...QQssPageNameZWDVWQQrdZ1QQcmdZViewItem#addimg3

For the $10.00 to $15.00, its a good deal.
I'm guessing, but I believe the higher the ma the more powerful.
and these are IR, so be careful! and use goggles.

The above link is for a $14.00 one.
Heres a link for a $9.00 one
http://cgi.ebay.com/Laser-Diode-835...ryZ53141QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
 
Joined
Oct 24, 2006
Messages
2,032
Points
0
High Octane said:
Heres one with the heat sink and a TEC built in and ready to go. The only bad thing is you don't know the mw. I bought one and it works. I'm currently waiting for a lens that will focus the beam.
It burns stuff, but it must be held close to the end of the fiber optics.
http://cgi.ebay.com/Laser-Diode-836...QQssPageNameZWDVWQQrdZ1QQcmdZViewItem#addimg3

For the $10.00 to $15.00, its a good deal.
I'm guessing, but I believe the higher the ma the more powerful.
and these are IR, so be careful! and use goggles.

The above link is for a $14.00 one.
Heres a link for a $9.00 one
http://cgi.ebay.com/Laser-Diode-835...ryZ53141QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

These are not mounted diode bars, just individual diodes in those containers. A mounted diode bar will draw Amps at the minimum - most likely a few tens of amps. Without knowing the voltage or efficiency of those 835nm diodes and going off the mA alone, I'd guess they're ~300-600mW optical output.
 
H

High_Octane

Guest
pseudonomen137 said:
These are not mounted diode bars, just individual diodes in those containers. A mounted diode bar will draw Amps at the minimum - most likely a few tens of amps. Without knowing the voltage or efficiency of those 835nm diodes and going off the mA alone, I'd guess they're ~300-600mW optical output.

True, they are not, However for the price they are great and easy to work with. I believe you are correct on the mw, At least from my experience with them, thats about what I guessed.
 
Joined
Oct 24, 2006
Messages
2,032
Points
0
Hell, the price was good on that 100W bar so I picked it up (~$85 shipped and I've bought from that seller before anyway). I'm guessing the chance is >90% I'm gunna screw it up, but I'll give it a shot and let yall know how it goes.
 
H

High_Octane

Guest
Great! Good luck with it.
I hope to see a writeup with pics on the assembly.
 
Joined
Oct 28, 2007
Messages
2,631
Points
48
pseudonomen137 said:
Hell, the price was good on that 100W bar so I picked it up (~$85 shipped and I've bought from that seller before anyway). I'm guessing the chance is >90% I'm gunna screw it up, but I'll give it a shot and let yall know how it goes.


awesome, now I can see how it will work...


oh and:
Heres one with the heat sink and a TEC built in and ready to go. The only bad thing is you don't know the mw. I bought one and it works. I'm currently waiting for a lens that will focus the beam.
It burns stuff, but it must be held close to the end of the fiber optics.
http://cgi.ebay.com/Laser-Diode-836nm-620ma-BM605_W0QQitemZ320194792505QQihZ011Q QcategoryZ53141QQssPageNameZWDVWQQrdZ1QQcmdZViewItem#addimg3

For the $10.00 to $15.00, its a good deal.
I'm guessing, but I believe the higher the ma the more powerful.
and these are IR, so be careful! and use goggles.

The above link is for a $14.00 one.
Heres a link for a $9.00 one
http://cgi.ebay.com/Laser-Diode-835nm-550ma-No-Reserve_W0QQitemZ320193050421QQih Z011QQcategoryZ53141QQssPageNameZWDVWQQrdZ1QQcmdZViewItem


Regarding that, how Would I power that? would I need a driver? thanks.
 
Joined
Aug 15, 2007
Messages
1,880
Points
0
AFAIK it has a driver in it. Though maybe I should shut up and let the person who has one talk :p
 




Top