This laser is not legal to use in public, and while we are not asking for any proof that the buyer is qualified to own this device, we trust that it will be used in a responsible fashion.
This is a legitimate high-power laser instrument. It will cast a dot on the clouds and burn a hole through a plastic cup from across the room. It is guaranteed to be above 50mW in output power, but that is a very conservative power rating. In actuality, these lasers usually have an output between 100mW and 150mW, or even more.
JavaDog wrote:AMM wrote:Though lasers are not visible unless there is some kind of dust suspended in the atmosphere.
Not quite true.
Skyline57GTR wrote:yes, it is real. But that's not enough thick the laser light, I mean its very thin laser light.
Hawkwing74 wrote:Is that real? Action Jim, please comment.
Arkwald wrote:a mere kW? How do you get a MW laser
In initial tests with the Teramobile firing 250 mJ pulses centered at 800 nm, the R-FIBS system successfully detected copper and steel samples located 90 m away. The laser's repetition rate was 10 Hz with a minimum pulse duration emitted of 80 femtoseconds. The researchers say a beam profile containing around 30 filaments was typically incident on the sample giving an intensity of around 10^13 W/cm2.
Captain Ned wrote:Assume the hole in the cup is 1mm. Assume that a light sabre blade is 50mm (2 inches +/-) in diameter. Applying basic math tells me that the light sabre's flux per square millimeter is 1/62500 of the original laser. Yawn.
just brew it! wrote:It's probably even worse than that. The original beam is probably smaller than the hole in the cup because A) the laser was hand-held, and so probably moved around a bit during the demonstration; and B) the plastic probably melted back a bit from where the laser actually hit it.
AMM wrote:JavaDog wrote:AMM wrote:Though lasers are not visible unless there is some kind of dust suspended in the atmosphere.
Not quite true.
Well okay, air molecules can scatter some photons... I was thinking of a laser in a vacuum.
Captain Ned wrote:Bloody pedants.
AMM wrote:I get to play with lasers and make holograms at university next term. Far more interesting than blinding people.