Set Free Your Inner Jedi (Or Pyro)

sirgoran writes "We've all thought about being the hero fighting off evil-doers and saving the day ever since we first saw Star Wars. The folks at Wicked Lasers have now brought that a little closer to reality with their latest release: a 1-Watt blue diode laser that can set skin and other things on fire. From an article at Daily Tech, where they talk about the dangers of such a powerful laser: 'And here's the best (or worst) part — it can set people (or things) on fire. Apparently the laser is so high-powered that shining it on fleshy parts will cause them to burst into flames. Of course it's equally capable of blinding people.' The thing that caught my eye was the price: $200. I wonder if they'll be able to meet the demand, since (if it works as advertised) this will be on every geek's Christmas list."

Comments

1 watt isn't enough to set skin on fire

[smellsofbikes]

Unless you hold it there for a *long* time. I've been hit by a 40 watt (CO2) laser and it left me with a burn that was like a bad sunburn. I have a 400mW (red) laser that I've been using to shoot down wasps in my workshop (it's a tall building and I can't get anything up to where they want to build a nest -- but let me warn you that a flaming wasp is a fire hazard) and it takes several seconds of exposure before the wasp dies.

With that said, I might be trying to get one of these because you can do some pretty cool stuff if you mount a laser this powerful in a plotter. It gets even better if you gut the plotter and add a Z axis so you can melt the top layer of material selectively, then lower the z stage, add a bit more material, and again melt it selectively: a relatively inexpensive, relatively high-precision 3d printer.

Re:2nd Amendment

[spinkham]

There is a high power laser pointer ban, but the ban is on marketing terms only. Only class 3a or lower lasers (0-5mW) may be marketed as laser pointers. Class 3b and higher lasers (5-500mW) may be sold in a hand-held form, but not marketed as pointers or amusement devices.

More to the point, there are regulatory requirements for features in high power laser devices that are often ignored.
All types of laser devices of any power must be registered with the FDA prior to sale in the US. Note this is registration per product type, not per sale. Class 3b and higher lasers must have a key based lockout, a remote interlock connector, and a warning label affixed to the product. Most importers of cheap chinese lasers of class 3b (>5mW) fall afoul of all of these requirements, and they are often confiscated in shipping with no recourse for the buyer.

http://www.fda.gov/Radiation-EmittingProducts/RadiationEmittingProductsandProcedures/HomeBusinessandEntertainment/LaserProductsandInstruments/ucm116373.htm
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfCFR/CFRSearch.cfm?FR=1040.10

The only class 3b hand-held lasers I've seen recently which meet all the requirements above are sold by wickedlasers.com. In the past year they have added a safety "key" and interlock connector to their class 3b laser products, and they now meet all the legal requirements. Other vendors might also meet the legal requirements, but I have not personally seen any.

Re:Fully Automatic Weapon

[Martin Blank]

What you call brush control devices use jets of propane or similar gases. Flamethrowers in the military sense (which are now extremely rare in the US, even in the military) use a gel or liquid fuel that is usually not completely burned by the time it reaches the target, thereby leaving a flaming substance that allows an easier transfer of the heat to the target. Those that use propane stop delivering heat once the flame jet is removed.