plexus
0
- Joined
- Dec 9, 2007
- Messages
- 441
- Points
- 28
Here is something a little unusual. This is a PL520 520nm green laser diode pressed into a copper module with an acrylic lens for $50. This is a DTR diode module, that he sells for $79.
so why only $50 - there is a problem, jim. Below are beam shots of the raw beam out of the diode. The other is the beam shot of a healthy PL520. notice the concentric rings. This is an aberration caused usually by a damaged exit aperture window. This module came from a build from someone else. It is what it is. I removed it from the build and replaced it with a new LD.
So up for grabs is this LD with the aforementioned issues. I can't tell what is causing it. However the LD will output the usual 80mw with glass lens, 100mw with G2 lens. and the beam, when focused is nice and not much different than the new diode. So other than wider beams like this is not much different when collimated with the lens. I just prefer to have a smooth nice beam profile with my lasers. so my pickiness is your gain.
$55US as-is shipped anywhere in NA
so why only $50 - there is a problem, jim. Below are beam shots of the raw beam out of the diode. The other is the beam shot of a healthy PL520. notice the concentric rings. This is an aberration caused usually by a damaged exit aperture window. This module came from a build from someone else. It is what it is. I removed it from the build and replaced it with a new LD.
So up for grabs is this LD with the aforementioned issues. I can't tell what is causing it. However the LD will output the usual 80mw with glass lens, 100mw with G2 lens. and the beam, when focused is nice and not much different than the new diode. So other than wider beams like this is not much different when collimated with the lens. I just prefer to have a smooth nice beam profile with my lasers. so my pickiness is your gain.
$55US as-is shipped anywhere in NA