Hi,
I'm trying to understand how Laser Diodes (LD) work and their driving requirements, and wondered if someone could please give me a few pointers with the following.
I believe LDs are current driven, not voltage driven. I noted by experimentation that whilst the voltage across an LD was less than about 1.4V, I recorded no current through it. Is this correct? One could argue that a small drift current would be expected due to the applied voltage, or otherwise, that the junction's built in potential blocks all current.
Many Thanks.
I'm trying to understand how Laser Diodes (LD) work and their driving requirements, and wondered if someone could please give me a few pointers with the following.
I believe LDs are current driven, not voltage driven. I noted by experimentation that whilst the voltage across an LD was less than about 1.4V, I recorded no current through it. Is this correct? One could argue that a small drift current would be expected due to the applied voltage, or otherwise, that the junction's built in potential blocks all current.
Many Thanks.