Presstek 40W IR diode

[Aleksa]

Hello everyone!

I have a 40w presstek diode,which is 808nm. I'm currently looking for the datasheet,but no luck.

The questions i have are:
1: What kind of connector does this module use ?
2: What fiber optic cable is recommended for this wavelength and power?
3: What is the best way to drive them ?
4: What is the recommended operating point of the diode(volts/amps) ?
5: How many um is the aperture ?

All in all,the datasheet will answer all of these questions. If anyone has it,mail it to me

I understand the danger at this power and wavelength. I have a pair of protection glasses,so that's taken in consideration. I never look at the beam. Don't look at all

Here are some pics :beer:

 

[Kamildos]

What a monster diode man! Don't turn on it

 

[ARG]

Close enough to a datasheet?
http://www.mediafire.com/view/?bnfugon3aq4957r

 

[jeffreythe00]

I already emailed that one to him ARG. He has it. Its about all the info I was given with the one I had bought..

 

[ARG]

I'm trying to find more info since I bought Jeff's. I'll update the thread if I find anything.

 

[Aleksa]

I found out that it can withstand 3v at 40A. So i built a nice SMPS and yes,it does work very nice. Dough its still scary to be around the diode when its working
Without a lens,it can melt aluminium like crazy
The thing is so scary,that i have to leave the room and put a camera with IR protection glasses in front of it to film it while working. I would really like to have a fiber cable...but i have no idea which one to get. Its a nice diode,but no practical use. The idea was to use it on a CNC table,but with no cable and lens,its useless.

 

[Cyparagon]

i built a nice SMPS and yes,it does work very nice.

I would like to see that. :wave:

Without a lens,it can melt aluminium like crazy

You mean foil, I hope. Otherwise I'm calling bullshit.

 

[Aleksa]

Yes,foil,the one that is used to connect batteries in series

Also,i would like to mention,the first way i tried to power the diode was with batteries!

I took a 12v battery that was used to power some handheld drill,and found out that it used 10x1.2v single batteries connected in series. Battery connected like that delivered 7Ah.

So i took it a part,and connected 5 batteries in parallel to get 1.2v and the other 5 batteries to get another 1.2v. So now connecting does two,you get 2.4v a crap load of amps

I added a 0.1ohm 100w resistor just to limit the current so it would not exceed more than 40A.

I ued like the thickest wire i could find,cause of the skin effect,otherwise the voltage will drop dramatically.

And yes,it does work

So,it is possible to make a handheld 40w puppy

The bad side is that you can use the laser for only 1 minute (depends on battery capacity )

The SMPS is easy to make,i had to learn how to build one. I can teach you all how to make one,but there is A LOT of info on the internet. A specially on Tahmind's blog

 

[joeybab3]

Yes,foil,the one that is used to connect batteries in series

Also,i would like to mention,the first way i tried to power the diode was with batteries!

I took a 12v battery that was used to power some handheld drill,and found out that it used 10x1.2v single batteries connected in series. Battery connected like that delivered 7Ah.

So i took it a part,and connected 5 batteries in parallel to get 1.2v and the other 5 batteries to get another 1.2v. So now connecting does two,you get 2.4v a crap load of amps

I added a 0.1ohm 100w resistor just to limit the current so it would not exceed more than 40A.

I ued like the thickest wire i could find,cause of the skin effect,otherwise the voltage will drop dramatically.

And yes,it does work

So,it is possible to make a handheld 40w puppy

The bad side is that you can use the laser for only 1 minute (depends on battery capacity )

The SMPS is easy to make,i had to learn how to build one. I can teach you all how to make one,but there is A LOT of info on the internet. A specially on Tahmind's blog

For a second i thought you were "Alaskan" and he had just changed his name, i read it as "alesken" XD

 

[Aleksa]

Close enough

 

[TaterMay]

Well, since it's been bumped...how did this thing turn out? Do you still have it? I'm curious as to the cost of one of these.

 

[Aleksa]

Well,i'm now using it anymore. It was just for fun. The 808nm cant be really used for something practical. I wanted to use it for a CNC engraver. Finding a lense for this thing and a fiber cable is really hard. The laser diode costed like 250$. Not really that expensive but really not usable for a CNC hobbyist like me. I prefer CO2 laser over this monster diode. Way easyer to drive and less expensive.