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



Laser Pointer Store

h55n laser diode

ureche

New member
Joined
Jul 15, 2010
Messages
3
Points
0
Hello everyone, i have just removed the LD from an lg h55n dvd rw, does anyone knows what are the specs for this LD? Or what mW,mA,V should i run this?

Any recommendation on the driver? I was thinking of using lm317 driver (http://laserpointerforums.com/f42/diy-homemade-laser-diode-driver-26339.html) as its easier to build, and i already have the parts.

Thanks
 

Tech_Junkie

Banned
Joined
Jan 2, 2009
Messages
11,871
Points
0
I would not go over 200mA. And that driver is fine. Make sure to put it into a heat sink or it wont last.
 

ureche

New member
Joined
Jul 15, 2010
Messages
3
Points
0
Hi, thank you for your answer. Using 200mA x ~2.5V from the driver is 500mW, wouldn't this be too high? Should i lower the voltage?
 

Grix

Well-known member
Joined
Dec 9, 2008
Messages
2,212
Points
63
Yes, the optical power will be much lower than the electrical power to the diode.
 

Xplorer877

New member
Joined
Oct 24, 2008
Messages
1,060
Points
0
Otherwise the diode efficiency would be 100%, and you then wouldn't need a heatsink.
Huh... if only....

-Tony
 




Top