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| Mad Scientists Science and Mathematics discussion-- theories, arguments, citations, proofs and pudding. |
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# 1
2008-12-07, 18:33
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could they make a clear laser pointer
http://www.wickedlasers.com/
if you dont already know, "wicked lasers" makes/sells lasers to the public, their lasers are pretty powerful, they can melt through plastic bags. thats pretty powerful for a hand held laser in my opinion.
but is it possible to make a laser like that that is clear?
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# 2
2008-12-07, 20:17
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Regular
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halfway between here and there
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Re: could they make a clear laser pointer
The body or the beam?
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# 3
2008-12-07, 20:26
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Re: could they make a clear laser pointer
beam.
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# 4
2008-12-07, 21:52
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New Arrival
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Marseille, France
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Re: could they make a clear laser pointer
you mean a white light laser? if so, the answer is yes.
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# 5
2008-12-08, 02:19
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Regular
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Bumblefuck, Egypt
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Re: could they make a clear laser pointer
Quote:
Originally Posted by mpscheuer
you mean a white light laser? if so, the answer is yes.
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I dont think so. I thought lasers only stayed in one small beam because they have only one wavelength of light. White light has all wavelengths so the beam expands as it travels. But, I could be wrong.
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# 6
2008-12-08, 04:16
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Regular
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Just passing 10000 posts.
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Re: could they make a clear laser pointer
cant you just get a wavelength that is outside the visible spectrum and therefore invisible?
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# 7
2008-12-08, 21:21
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Regular
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halfway between here and there
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Re: could they make a clear laser pointer
Sure. wavelenghts less than 400 nm or greater than 750 nm.
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# 8
2008-12-08, 23:31
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Regular
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Planet Earth
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Re: could they make a clear laser pointer
Or, if you wanted to be ridiculous, you get a red, green, and blue laser, mount them perpendicular to each other and fire them into a perfectly-machined prism that would bend the beams to create one single white beam!
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# 9
2008-12-08, 23:37
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Re: could they make a clear laser pointer
Quote:
Originally Posted by Giggles_The_Panda
I dont think so. I thought lasers only stayed in one small beam because they have only one wavelength of light. White light has all wavelengths so the beam expands as it travels. But, I could be wrong.
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yup, yore wrong, you just have to use a prism of some sort (ruby is often used) to make the light come out all parallel like to itself.
Light Amplification Stimulated Emission of radiation.
I think the reason there was only red ones for a while was because artificial ruby is relatively cheap to make...
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# 10
2008-12-09, 06:47
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Re: could they make a clear laser pointer
Quote:
Originally Posted by Sentinel
Or, if you wanted to be ridiculous, you get a red, green, and blue laser, mount them perpendicular to each other and fire them into a perfectly-machined prism that would bend the beams to create one single white beam!
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Wouldn't the different colours have slightly different refractive indexes through the prism?
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#11
2008-12-10, 04:45 |
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Re: could they make a clear laser pointer
even a infrared laser would burn and can't be seen by the naked eye at all.... they can be very strong
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#12
2008-12-10, 05:41 |
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Re: could they make a clear laser pointer
Wouldn't the different colours have slightly different refractive indexes through the prism?
ermmm...yeah....but couldn't you machine your special prism to compensate for this?
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#13
2008-12-10, 06:23 |
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Re: could they make a clear laser pointer
ermmm...yeah....but couldn't you machine your special prism to compensate for this?
its just too impractical.... you'd have to make it out of different materials and theyd have to be flawless.
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#14
2008-12-10, 06:36 |
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Re: could they make a clear laser pointer
ermmm...yeah....but couldn't you machine your special prism to compensate for this?
The individual colours would have to strike the prism at different angles of incidence, which you could calculate if you wanted, but it'd have to be fairly precise to keep divergence insignificant over a long distance.
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#15
2008-12-10, 10:07 |
S.W.I.M. 
Regular
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Re: could they make a clear laser pointer
They do have infrared laser sights, they are usually used in the military because they are visible only through night vision goggles. I would imagine that you could make on that is powerful enough to burn something.
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#16
2008-12-11, 18:02 |
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Re: could they make a clear laser pointer
Quote:
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Originally Posted by Sentinel
Or, if you wanted to be ridiculous, you get a red, green, and blue laser, mount them perpendicular to each other and fire them into a perfectly-machined prism that would bend the beams to create one single white beam!
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Why would you need a prism? You could just focus them one on point. See: dual clear headlights on the Orbitron by Ed Roth.
http://images.hotrod.com/featuredvehicles/hrdp_0803_02_z+t_bucket_roadster+.jpg |
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#17
2008-12-14, 13:57 |
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Regular
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Questions objections obtuse
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Re: could they make a clear laser pointer
http://blog.wossman.net/wp-content/uploads/Mysterio442px.jpg
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#18
2008-12-16, 17:44 |
Vykromod
Regular
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Re: could they make a clear laser pointer
Quote:
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Originally Posted by bozoyoro
even a infrared laser would burn and can't be seen by the naked eye at all.... they can be very strong
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Yup.
I seem to remember a document which explained the theoretical makeup of such a device.
The document was very specific, if you know what I mean.
I may even have acquired it from &T itself, a while ago.
Search for the CO2 laser if you're interested. |
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#19
2008-12-17, 01:12 |
Quageschi
Regular
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Re: could they make a clear laser pointer
Yup.
I seem to remember a document which explained the theoretical makeup of such a device.
The document was very specific, if you know what I mean.
I may even have acquired it from &T itself, a while ago.
Search for the CO2 laser if you're interested.
They just started testing the military laser they had been working on for years now. Used to take out missles mid-air.
http://news.bbc.co.uk/1/hi/sci/tech/7761025.stm
I imagine it could also be used against ground targets.
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#20
2008-12-17, 01:17 |
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Re: could they make a clear laser pointer
Yea, I have one. They are called flashlights.
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#21
2008-12-17, 10:03 |
Vykromod
Regular
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Re: could they make a clear laser pointer
They just started testing the military laser they had been working on for years now. Used to take out missles mid-air.
http://news.bbc.co.uk/1/hi/sci/tech/7761025.stm
I imagine it could also be used against ground targets.
Interesting.
Also lol @ Audiophile.
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#22
2008-12-17, 22:02 |
HairyFreak
Regular
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Re: could they make a clear laser pointer
what would be the point of it being "clear" it wouldnt do anyfing, u mean white laser.
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#23
2008-12-18, 22:01 |
hazode
Regular
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Re: could they make a clear laser pointer
Quote:
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Originally Posted by HairyFreak
what would be the point of it being "clear" it wouldnt do anyfing, u mean white laser.
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ENGLISH MUTHA FUCKA, DO YOU SPEAK IT?
And no he means "clear". As in invisible. Like an infra-red beam, which, as someone said, is used in the military. All you would need to do is increase the power I suppose, I don't know, I'm not a technician. But if you plan to make your own infra-red laser, be extremely careful not to get it in your eyes, you won't realise it's damaging your eyes 'till it's too late. |
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#24
2008-12-28, 06:31 |
PyroPeanut1776
Regular
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Re: could they make a clear laser pointer
Not quite a laser but:
http://www.wickedlasers.com/lasers/wicked_lights-74-0.htm
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#25
2008-12-28, 09:17 |
Captain Douche
Regular
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Re: could they make a clear laser pointer
299.99 for a flashlight that will set everything on fire next time you go camping!
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#26
2009-01-12, 21:37 |
rog8811
Regular
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Re: could they make a clear laser pointer
Hi, my first post and resurrecting a stale thread  , reason being what I am going to refer too was not built when the thread was alive.
I know that what the OP was refering too is obtainable by using infra-red, but I have something to add the the comment below.
Or, if you wanted to be ridiculous, you get a red, green, and blue laser, mount them perpendicular to each other and fire them into a perfectly-machined prism that would bend the beams to create one single white beam!
Don't think prism think beam splitters used in reverse as combiners, The link to my website shows what I mean. http://www.rog8811.com/whitelaserpointer.htm
http://i68.photobucket.com/albums/i9/alaskafriendor2/whitebeam01.jpg
Regards rog8811 |
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could they make a clear laser pointer
