Apologies if this has been gone over a zillion times. I've been pouring over threads here for days and feel like I've only scratched the surface.
What are the recommended optics for getting a decent quality beam out of one of these A140 diodes? I got a cheap module on ebay which appears to have an uncoated glass lens and found the beam to be pretty good. I picked up an Aixiz 405 lens and tried that today but was a little disappointed by the results, there's a line across the spot in the output and it doesn't seem to focus as well as the cheap lens that came with the module. I have an EE background so the electronic part is no problem but I'm a bit of a noob when it comes to optics, most of my previous experience has been with gas lasers.
These things are absolutely stunning even where I am so far. Running at 1.2A I bumped the module so it was missing my beam stop and the next thing I knew, a cardboard box across the room was smoking!
What are the recommended optics for getting a decent quality beam out of one of these A140 diodes? I got a cheap module on ebay which appears to have an uncoated glass lens and found the beam to be pretty good. I picked up an Aixiz 405 lens and tried that today but was a little disappointed by the results, there's a line across the spot in the output and it doesn't seem to focus as well as the cheap lens that came with the module. I have an EE background so the electronic part is no problem but I'm a bit of a noob when it comes to optics, most of my previous experience has been with gas lasers.
These things are absolutely stunning even where I am so far. Running at 1.2A I bumped the module so it was missing my beam stop and the next thing I knew, a cardboard box across the room was smoking!