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Hi Dave, agree that the light will continue, I meant just the part in mid-air visible to the naked eye. And It should be harmless, no million degree plasma involved! However, why saying it could NOT be done? What about two lasers that creates an interference pattern that show a stronger wave in...

Hi Firsh, this really make sense, too much power and you see the beam, too few and you don't see the collimated dot. What about introducing another variable: The size of the beam when it leave the last lens. I am thinking about a very large lens (i.e. 10 cm) that creates a "cone" of light with...

Hello Krogith, and Bluefan, so far the exception you pointed out is the best :-) When I say I want the beam to stop in mid air, I mean the visible beam: In my little experiments I noticed that the beam of a low power laser is not visible in a room, but if you focus it, let's say 10CM from the...

ok, I got definitely convinced by the balloons model, but I'll ensure I take enough mushrooms to maximize the effect lol :-) I do realize I am probably the millionth guy that ask on this forum how to build a light saber,but I got struck with this idea of vibrating optics that could focus the...

Thanks for the suggestions, about the machined parts: I was not aware of this great forum when I built it. I a seriously considering to buy a kit from a member for my next project.....truly amazing stuff! I had to remove a bottom ring so I am not sure the back rubber button fits so tightly to...

Hello, the glasses are effective against blue light, but the plastic color they are made of is Red ;-) Tanks for the tip, I am going to remove the glass and as little project I'll try to make an aluminum disk to adjust the focus...or maybe I can find on the site something that fit the...

How to build a "real" Light Saber? I want to have an exact live replica of the star wars type light saber. It's composed by a handle (easy to build a replica) and a thick laser beam 4-5 feet long that terminates in mid air. This post is how to acheive that. A powerful collimated laser can pack...

Hello, I hope I picked the right section, I just joined this forum and would like to share my first laser creation: Here the host I started with: For 140$ I got - a 1000mw 445nm diode assembled in an axiz module - glass lens - Driver already soldiered to fit into the module - Red...