Whats the safest current for Blu-ray?

[desslok]

I have seen what current some people are running their Blu-rays at. But I would like to know what is the safest current for longest life. Would it be just when it begins to lase, or is it better to run it a little over the lase threshold? Or is it a specific current? I don't care about power, I just want it to last. I use my red for burning. I have the driver and housing just about done, and the diode should be here next week. Thanks in advance.

 

[Cyparagon]

I=0 is the safest. It's impossible to burn out with no current.
/smartassery

 

[paper183]

Around 40 should be safe enough, with deadal's circuit you can use 33ohms to get 38ma which seems to be most used solution around here.

 

[rog8811]

Most people advocate lase point +10ma..... The lasing point varies from LD to LD, when it comes to longevity, I would guess that none of us really know yet.

I use my Blue ray pointer, as a pointer, daily and it is fine after 3 months.

Hope that helps

Regards rog8811

 

[desslok]

OK thanks for the helpful responses. I have a 33 ohm resistor, and a 100 ohm pot, so I'll try the lase threshold + 10 and the 33 ohm pot should keep it from getting past 38 mA. Now I just need to be patient while the diode ships.....