Beam expanders?

Paul0759 · Aug 2, 2011

Anyone know of any good videos of lasers with beam expanders at great distances?

Cyparagon · Aug 2, 2011

It's an old one, but still neat:

edit: embed seems to be misbehaving.

http://www.youtube.com/watch?v=_9QotAtxrmc

Kevlar · Aug 3, 2011

Ok. A beam expander is officially now on my "needs" list! :drool:

hakzaw1 · Aug 3, 2011

here are some BE vids-these are on the GB for reasonable prices.

‪beam expander jetlasers‬‏ - YouTube

ARG · Aug 3, 2011

What exactly do beam expanders do? just improve the divergence?

CDHDC · Aug 4, 2011

Cyparagon said:
It's an old one, but still neat:

edit: embed seems to be misbehaving.

‪Laser Igniter 300 Feet‬‏ - YouTube

I love that vid. This was the one I was thinking of when I read the original post

Moebius · Aug 7, 2011

This one's my favorite. I find it very relaxing.