How can I make a laser that appears to be swirling in the air

>>1048889
Not how light works. Eyes don't have FPS, just cut out a lot of intermediary information to make jittery motion seem smooth. It would look like a column of light, not a helix.

>>1048889
you can use a rotating head of a water gun of some sort, and an internal led to light up the stream from within the gun itself.

you won't actually make it out of actual laser, that is for certain, so you will have to think of creative ways for the "effect".

>>1048892
>>1048899
How though ? It's doable with water.

https://youtu.be/nPBdImGeFxs?t=442
jump to 7:18

Maybe it would be possible to eject a high speed liquid with led lighting it up from the gun to make that effect. But I'd rather do it with a laser.

>>1048919
It's not doable with water. IRL it doesnt work. It only works when recorded on camera, because cameras DO have fps, unlike humans.

>>1048920
It's doable with water the way the supersoaker works in the video I posted. It looks exactly like the OP image.

Maybe it would be doable with focused lasers that create a hotspot in midair. And you just program it to draw spirals in mid-air.

>>1048920

Yes it is doable with water, because the water moves at a couple m/s so you can put the entire helix into the air. Which will move slow enough for us to see a moving helix.

>>1048919

The light moving at 3e8 m/s prevents the same approach as with water working.

The only way to do this with lasers would be with large lenses and smoke so you can project spots of light at the focal point of the lens.

In theory you can do it without the smoke too, but you need very high intensity pulse lasers to ionize the air. Can't be done with just laser diodes, need's pulsed rod or fiber pulse lasers to keep the pulses short enough to be safe (if the pulses are too long you would be putting joules of energy into a spot, which could be someone's retina). This is getting really exotic and expensive though.

>>1048919
>that video

Jesus. The world needs another war or something to keep these wastes of space off youtube and stop them from making shit videos about baby toys. Men need to be men and grow up.

>>1048889
I agree with a water+LED solution. Using a laser in place of the LED may also work, but you won't be able to do it without the water.

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>>1048930
>>1048933
How about drawing a helix in midair with these really fast?

https://www.youtube.com/watch?v=KfVS-npfVuY

>>1048935

Can you afford a high rep rate, megawatt instantaneous power, picosecond range pulse laser?

>>1048938
how expensive can it be ?

>>1048919
Photons aren't influenced by gravity on the same scale as water. Go away.

>>1048954

Probably 100K range if you wanted to buy it commercially.

That Japanese display uses ns range lasers BTW. Which still put way too much power into the air to be near it.

Even the femtosecond lasers probably aren't eye safe on second thought. They are safe to touch, but if it can ionize the air it can probably cause some cavitation in water. Not a problem for skin cells, but unlikely to be good for your eyes.

Guys, since op is already considering water...

why not just make an actual spiral out of twisted acrylic, make it frosted texture, and then light it up with led

then fix it on a stronger acrylic tube they use in lightsabre toys, then reinforce this with a series of braces with 1mm steel rods (to make it less noticible) between the staight middle rod and the sprial

this will make a strong structure that can remain straight in mid air, then make it sufficiently long, maybe 2 to 3 metres, which should be more than enough for cosplays and for photoshoot

>>1048997
I think the point of lasers is to have a huge range and being able to fire it. I'm sure there are lots of ways to make a static liquid helix sculpture for cosplay purposes.

>>1048889
Smoke and mirrors.

The gay way?
Light up one of those plastic streamers and spin it around. Attach fan to gun.

https://www.youtube.com/watch?v=D66tzbdcP9s

plz halp :o

>>1050256

Can't bend the laws of physics for you, sorry. Try prayer.

>>1050274
There has to be a way to fake it

>>1050287

A laser beam does not go around corners AND any naked laser beam you can see without smoke is going to kill people.

To get the spiral you pretty much need to guide the light, either with acrylic rods or with water.

If there is smoke you could try making something interesting with normal laser diodes. For instance you could have a rotating disc with some laser diodes on it. The centre one pointing straight ahead and then a couple others around it pointing slightly inward. It's not a spiral but rotating the disc should still look kinda cool.

Try plasma. Go learn

The only way that i could think of to do this at a home hobbyist level would be to combine a smoke ring gun with 2 lasers. the effect would only look like the gluon gun through a long exposure camera however.

>>1050302
>any naked laser beam you can see without smoke is going to kill people.
nah try a 2 watt 445nm laser. blind the shit out of you yes, but not kill

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>eyes fps

This thread is hilarious. It's people who know what they're talking about being told they don't know anything by people who don't know what they're talking about but YouTube confirmed it.

>Visable spiral laser beam

Kek my retinas.

>>1048924
>you just program it to draw spirals
>just program the light
>program photons

*sigh* I need another beer for this...

Okay, I don't know if you're just toying with us here, that you understand that a physical law isn't something you can "break", that you realize that some things are simply not practically attainable, even for very very wealthy individuals.

Or if you're literally dumb enough to think that you, some womp rat in a basement somewhere, show some "truth" or "principle" by displaying a video of a... A grown man playing with a water gun... To demonstrate "what you want to do, but with lasers"...

I'm seriously conflicted, OP.

https://www.youtube.com/watch?v=-LkbNiQZBj4

This is some of the most amazing shit you can do with lasers.
https://www.youtube.com/watch?v=cMKEe7brcls

As you can see, it's largely 2D, with a "fake" 3D depth effect caused by water mist. Very impressive, absolutely. But not some controllable snake you can pull and push wherever you want.

The japanese mentioned earlier in this thread have pioneered technologies that make lasers display "volumetric light", that is to say, light that is obviously in a volume, not just a plane. They achieve this through pulses of light so brief, so incomprehensibly tiny and quick, that they stop the light pulse almost at the same time as it leaves the source.

The technology you want is coming, OP, but it's not here just yet, and judging from your posts, you're not really able to comprehend it either.

Please leave.

Electrolaser with multiple asynchronous phases that synchronise at helical points around 0° then shoot a jet of charged plasma down the resulting magnetic field. Simple.

>>1050413

It's actually possible to ionize atmosphere and turn it into a floating dot of plasma. It's then simply a matter of moving the focal point around to draw a rudimentary image.

https://www.youtube.com/watch?v=KfVS-npfVuY

But, as with anything involving precision components and high-powered lasers, it's expensive and dangerous.

>>1048889
I remember studying the functions for generating these waves in my calc 3 class years back. They are 3 dimensional time based particle movement functions. I suggest looking up how they are made in games and the like first.

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There might be a way

https://en.wikipedia.org/wiki/Orbital_angular_momentum_of_light

>>1050413
>doesn't know 5 year old ionizing laser technology
>goes on a 5 paragraph rant about OP not understanding new technologies

kek. welcome to 2016.
>How can I make a laser that appears to be swirling in the air

It's absolutely doable what OP is asking for with these, which basically let you create any shape in mid-air with focused lasers.

https://www.youtube.com/watch?v=GNoOiXkXmYQ

>>1050810
>/diy/
>expensive specialist tech
pick one

>>1050810
>How can I make
>can I make
The answer is no in any case. OP isn't an institute or a rich man. He can not. Thus the thread is moot. He can go to /sci/ if he wants to discuss the physical nature of light or different ways to produce seemingly three dimensional light patterns.

Go. Away.

>>1050810
Great way to kill your eyes.
Completely pointless tech.

>>1050908
And the inventors of this laser? They magically didn't blind themselves while running the laser for dozens of hours?

>>1050912
that is probably the reason they are not commercialised yet because there is no safe way to tell if it does minute damage to eyes

also, in case you are retarded, lab environment is not the same as outside the lab environment

>>1050931
>How did they not blind themselves
>lab environment is not the same as outside the lab environment
It's ironic someone like you trying to call anyone a retard. They showed this laser in exhibitions, people including kids touched the laser in mid-air, the reporters showing this on tv or nobody that saw the laser went blind.

You don't know what you're talking about. Go away.

>>1050936

Unless you want to post links I think you are confusing it with the femto-second laser display which put the tiny fairy into the air.

The trick with that is that you can touch it, but they won't let you move your head within the space in which the laser can be focused. It also has a relatively small space which it can be focused in unlike the Japanese display.

Water has much more heat capacity than air and skin cells can take a lot of beating so touching it with your hands is not much of a problem.

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>>1050948
How about intersecting lasers to create a helix pattern ? Thats more reliable than raping your eyes with radiation from femto-second lasers

>>1048889
You could create the illusion of light swirling in the air using pendulum wave.
https://www.youtube.com/watch?v=b8O1jlHyKpU

>>1051701
on too many levels of full retard, i cant respond

>>1051709
Shitpost elsewhere if you don't know what you're talking about retard.

>>1052066
you cant possibly defend a full retard idea, there is nothing to defend

ta-daa !
http://www.youtube.com/watch?v=I6AIL09Bonc

>>1052072
>focused laser thats been used billions of times is a retarded idea
what

>>1052087
>focused laser
>what
what

>>1052111
Is a bunch of lasers from different angles focusing on a single point in the air too much of a complex concept for you? Why are you on /diy/ if you're such a dumb brainlet?

>>1052187
>Is a bunch of lasers from different angles focusing on a single point in the air
>single point
>a helix
>swirling in the air
>calling people dumb

a quadrillion gigawats

>>1052192
Are you so desperately retarded that you can't form arguments and rather hopelessly expect people to find some sense out of your greentext drivel?
Seriously, don't visit this board if you don't understand how things work.

>>1052203
>still defending lasers focused into a helix
>very good vocabulary for insults
you should get rewarded for that sheer dedication

>>1052210
>which can be drawn into the air using aimed mirrors
>drawn into the air
>air

HAHAHAHAHAHAHAHA

>>1052212
>>>/b/

>>1052215
>laser drawn into the air
>/b/
no man, we are totally in /sci/ territory

>>1052086
This looks really cool though

>>1049593
>It turns the wrong way
REEEEEEEEEEEEEEEEEEEEE

>>1052086
Oh shit, why don't we have those in school when studying waves and harmonics? It's like a (psychedelic) projection in real numbers of a complex formula.

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>>1051701
>How about intersecting lasers to create a helix pattern
>>1052210
>I said single point imbecile, not a helix shape

>>1052862
>taking words out of the context
make a system with multiple lasers
make the laser rays converge into a single point in the air using a thin convex lens
use small motors to slightly rotate the lens on its axis to draw a helix shapes in the air with the converged point of light in midair
get it ?

>>1048964
Op don't listen to this guy. All you got to do is create a mini black hole. Its very do able. Just look on youtube.

>>1053085
it wont work

>>1048889
No.

>>1053094
explain

>>1053112
there will be laser everywhere

>>1053085
I don't think we've had quite as dumb a fool as you here in a long time.

Lasers don't magically go from "invisible" to "visible in daylight" just because you add more of them. Light doesn't bend to your fucking whim. Seriously, read some god damn high school physics and shut the fuck up.

>>1053118
There will be a laser drawn into the air along with lots of light pollution. I'd love to hear your solution but you're here to shitpost and be a contrarian, so...

>>1053133
>I'll add some imaginary factors than attack them so I look smart.
ssshhh no tears now.

>>1053156
>laser drawn into the air

this guy is genuinely retarded, no point in trying to talk him out of this, he will keep attacking with insults and more nonsense

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>>1053159
Fucks sake learn about converging rays before attempting to make posts you mouthbreather. It's like optics 101

>>1053168
show us how you will draw it in the air

>>1050313
This, high energy plasma beam guided with magnets in a vacuum tube. Should be easy

>>1048889
you quantum tangle a laser that is frozen in dry ice with a plastic sheet, then rotate the sheet while the dry ice is defrosting the laser so that laser will appear to be swirling in the air, alternatively you can just get a swirling laser module from target or any supermarket that sells gardening tools

>>1053168
Doesn't let you draw anything resembling a helix. It might let you """"draw"""" in smoke or similar by virtue of the human eye processing several motions as one motion, but still nothing exceeding pink floyd.

Speaking of mouthbreathers, shut your hole. You do nothing but make a fool of yourself, and you don't even know it.

>>1053168
Understand how light works before speaking.

Plasma, not laser.

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>>1053168
SURE LOOKS LIKE A HELIX

Can we report OP for being clinically retarded?

>>1054028
>still buttmad
lmao its not my fault you failed optics 101

>>1055154
Even Jimmy Diresta can tell you you can't make a helix in mid air with optics 9001

>>1055156
yet you fail to explain why it wouldnt work

>>1055160
Because light moves really fast, like, it's the fastest thing in the universe kind of fast, so even if you spin the lasers at 7200 rpm the helix is going to be 3747.5 kilometers long before it completes a single rotation.

The second option for free air helices is to use pulsed lasers that produce small pockets of plasma in the atmosphere. This requires very expensive, very precise, and very bulky equipment, so it's not something you can diy and jam into a toy gun.


The only feasible option is to use a physical waveguide for the light, like a fiber optic cable.

>>1055154
You seem to be the assblasted one because your retarded idea won't work, and you refuse to listen to anything we say, or even try to educate yourself on the topic.

>>1055160
Because it will not look like a helix at all, just lasers in straight lines