Maybe new record for popping balloons in a row. These are 190 black balloons with average 15cm in diameter. In this test i didnt use a expansion lens or anything else. This handheld laser is self build with a 500mw firedragon host, a little bit modified to make a lasever 800mw module fit inside. Now i got my LPM and measured real 1500mw! [ Ссылка ]
Great divergence as you can see. Beam at aperature 3.5-4mm, after 25 meters about 25mm (~0.9mrad). Next time i need more balloons (and more time, took me 6 hours to build everything up). In the middle is one balloon with not enough air left to pop, you can hear its penetrated but not popping. I put that one out of the way to keep the laser going.
Burning stuff with this laser: [ Ссылка ]
