Need help with red LD from Sony DW-D26A?

[JCPR]

Hi,

I'm new here at the forum and also to laser diode stuff but I have some electronics skills. I build a small driver based on the

LM317T
100 ohm Pot.
5 (for red LD) or 10 ohm Res.
1N4001
47uf
and the LD
+ 7.5VDC @ 1 Amp

using some info I read from this forum. I'm using a Red LD that I took off from a Sony DVD Burner Mod. DW-D26A but I can't have it to focus or do any burning at all, (I'm just using the LD on a small heat sink and no lens) don't know if it needs a lens to focus or what. It seem very bright (at the wall) on full power. With 5 ohm resistor (for red LD as per schematic) I have 225 ma across the output and LD @ full. I really appreciate some help here or inputs. Please easy on me, this is my first one.

Thanks!
JC

 

[Kenom]

I've put together a few video tutorials on how to build a laser pointer. However there is a ton of information regarding building red laser pointers in the red section. You'll find so much information on how to do it, it's mostly a matter of finding the host you want to use to build it.'

I suppose the most important thing is what are you trying to do in the end? Make a burning laser?

 

[JCPR]

Yes, a burning laser.

I will keep reading then.

Thanks!

 

[Kenom]

I'll provide you a link to my tutorial posted on youtube.

Seems I removed it. I'll try to find a good tutorial for ya.

http://www.metacafe.com/watch/1120132/diy_burning_red_laser_memine/
http://www.metacafe.com/watch/837806/easy_diy_cuttin_burning_red_laser/

 

[JCPR]

Thanks a lot!!! Very helpful...

I let you know later how i'm doing.

JC

 

[JCPR]

Do you know the max. output of this LD (is a Red LD came from a Sony DVD Burner Mod. DW-D26A) that I'm using?