520nm Laser build

[Alien Laser]

Pen laser build and blue led <800mW

 

[aaronnoraa]

That divergence looks pretty good , Sharp diode?

 

[RedCowboy]

Nice bright beam, looks like a 532nm direct diode. Is it?

 

[zigzag123]

Nice bright beam, looks like a 532nm direct diode. Is it?

Maby its one of those 525nm we are seeing lately?? The color looks close to a 532 but the beam is to thick.
Im not seeing a sign of af a focus knob though and Alien posted less or around 800mW.
I'm thinking he set the focus but you can change it with a 2 prong wrench..

 

[Snecho]

Nice build! That pen host is pretty sweet

I bet the duty cycle is like 10 seconds though lol