It's possible?

[FatalaS]

So it's possible to make black/white lasers?Maybe there are some already?

 

[Speedy78]

Black light? Lol. White lasers are a mixture of red green and blue. Or RGB. Krypton argon gas lasers tend to be white. There are also small lab style units and a few custom handhelds that have been built that combine the rgb into a white laser.

 

[Cyparagon]

White can be made with red, green, and blue...

But it can also be made with just yellow and blue:

Also (in theory) 405 with 561 and probably several other pairs.

 

[Sigurthr]

Black is the perception of an absense of light. You can't make black by adding light to anything. Likewise you can't take away photons that are already out there. They either get absorbed by something or continue on forever.

 

[hwang21]

A couple dichro's will do the job of combining red green and blue into a white-ish laser. Although technically a white laser doesn't exist since a laser should be coherent and in-phase, and white light contains more than one wavelength of light

 

[Cyparagon]

a white laser doesn't exist since a laser should be coherent and in-phase

That's not part of the acronym. If stimulated emission is taking place, it's a laser. If you're disqualify anything with more than one color, you have to cross argon, krypton, CO2, and many others off the list.

 

[Livinloud]

you want white light you say?

Try 5W RGB

or you could always buy 1kW White Light

EDIT: as far as a black laser light my suggestion is hold any laser in your hands, press the power button and immediately close your eyes. VUALA, BLACK LASER BEAM!!!!! :na: just kidding

 

[laserboy420]

I think a 405 laser might be considered a blacklight by some.

 

[scumbagatheist]

I think a 405 laser might be considered a blacklight by some.

Those people would be wrong. As we're technicians, and not lay-people, let's call it what it is.

405nm is "Near Ultraviolet", not "black light". It will make fluorescent on phosphorescent objects fluoresce, but, like it's been stated before, it's neither black nor is it true UV.

 

[Fraggle]

As they can actually manufacture anti-matter now, if you could manufacture enough of the right sort of anti-matter you could manufacture a laser made from anti-matter.

Shouldn't that emit anti-photons which should collide with normal photons and then both are destroyed?

Ok, it wouldn't be black, where the two beams meet you'd have a constant anti-matter - matter explosion, and it'd have to be done in a 100% vaccum or the anti-matter laser beam would be destroyed by the matter it tries to pass through.

Actually, would that be a way to create a vaccum?

Point an anti-matter laser at any region of normal-matter space and any normal-matter in that space will be destroyed, leaving behind perfect vaccum plus the explosion by products (other gamma rays I believe?)

(this area of science isn't my strong point LOL)

 

[scumbagatheist]

no...no...no...no.

This is NOT the way antimatter works. When you say they can "manufacture" antimatter, it's on the scale of the VERY small amounts...like a few particles at a time. They are difficult to store, and dangerous to use. See: CERN.

Nobody can create an "anti-laser" that emits "anti-photon". The antimatter made for experiments, like those used at CERN are positrons, or anti-protons. They are simply protons that have had their charges and spins reversed (with lasers).

I hope I don't have to go on any further on how wrong all of these points are.

 

[chipdouglas]

I see where his confusion is. He means a black light like a uv light. So yes, he is almost correct in that there is a "black light laser". But now that op is is here, time to learn the correct terminology. Read up my man!!!


Michael

 

[Fraggle]

no...no...no...no.

This is NOT the way antimatter works. When you say they can "manufacture" antimatter, it's on the scale of the VERY small amounts...like a few particles at a time. They are difficult to store, and dangerous to use. See: CERN.

Nobody can create an "anti-laser" that emits "anti-photon". The antimatter made for experiments, like those used at CERN are positrons, or anti-protons. They are simply protons that have had their charges and spins reversed (with lasers).

I hope I don't have to go on any further on how wrong all of these points are.

< not sure if serious....? >

I certainly wasn't being serious!

 

[scumbagatheist]

My mistake. With so many ridiculous noob questions, it can be difficult to tell the difference at times.

 

[FatalaS]

How about pink?Why there are no pink lasers?

 

[Livinloud]