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FrozenGate by Avery
Ruby Laser? What is it
- Thread starter Storm
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- Jul 21, 2007
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I wouldn't mind one of them, although that is one hell of a long charge time.
It would have been cool to see if he could pop a few more baloons at the same time.
It would have been cool to see if he could pop a few more baloons at the same time.
Frosty said:
I'm certainly positive that the laser would easily pop perhaps 30 balloons in one shot!
--DDL[/quote]
Well if it burns through a cd instantly I bet it can burn lots of things, wonder why he even bothered using black balloons? I also wonder how he was terminating the beam??? Wouldnt be surprised if there was hundreds of little holes in his house, lol.
So now I have a question. That laser is pulsed, so it jsut fires and shuts off. does the beam keep going? I not sure I phrased that right, but like a bullet fired from a gun, would the beam jsut continue at the speed of light till it found something to terminate on?[/quote]
Yea you can think of it like a bullet. Although it fires very quickly the beam that comes out will continue on its way until it hits something.
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who is that guy he said he built that when he was 14
he must have some connections with the military has anyone here ever tried to build somthing like that
i think it would be very interesting to see one of those come to life by your own means
he must have some connections with the military has anyone here ever tried to build somthing like that
i think it would be very interesting to see one of those come to life by your own means
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- Nov 1, 2006
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When I was 12, I built a pulsed laser, and got just one discharge out of it because the flashtube & caps were grossly mismatched; the flashtube exploded at discharge and took the laser rod along for the ride. :'(
What's with this guy?
I mean c'mon he's got a million watts firing out off that thing and he's popping balloons. If i were to have a monster like that popping balloons would be the last thing on my mind, unless maybe the occasional weather balloon. I'd be punching holes in razors, blasting through soda cans, wasting car tires, setting various stuff on fire an maybe even cooking some marshmellows with it.
Awesome video though and respect for the guy who built it, it looks extremely well done, the guy knows his stuff.
I mean c'mon he's got a million watts firing out off that thing and he's popping balloons. If i were to have a monster like that popping balloons would be the last thing on my mind, unless maybe the occasional weather balloon. I'd be punching holes in razors, blasting through soda cans, wasting car tires, setting various stuff on fire an maybe even cooking some marshmellows with it.
Awesome video though and respect for the guy who built it, it looks extremely well done, the guy knows his stuff.
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sambo5472 said:
A million watts is for dramatic effect. It's really nothing when you figure the pulse width. It'll pop a balloon and for homebuilt measurement it's probably on the order of 1 Gillette (can punch through one razor blade). It'll never blast multiple balloons in one shot because the pulse is attenuated and dissipated on the first balloon.
Charging time on the circuit is a function of the capacitor voltage/capacitance against the input. It could charge so rapidly that you could fire thousands of shots per second if the circuit were robust enough but for a homebuilt ruby laser the duty cycle is determined by the temperature of the ruby rod since it is very prone to blitzing from heat (much more than an Nd:YAG rod).
This is a nice system overall since properly configuring a ruby laser is more difficult than an Nd:YAG system (ruby rods are finicky when it comes to pump power) and the added bonus of being visible from the get-go.
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just bought a ruby rod from ebay (3mm x 70mm); got a small stroboscope. Got HR mirror goldplated, so i'm about to try make one.
don't got a OC for ruby, but hey the guy from 1960 used a simple plate with a hole right?
don't got a OC for ruby, but hey the guy from 1960 used a simple plate with a hole right?
It isn't so simple to makea ruby laser. It is true that Maiman used at first time a metal coating with a hole as OC, but you should notice that in that case the rod was kept at very low temperature(with liquid nitrogen) in order to get a low threshold energy;plus the flashlamp was very big respect to the ruby.wilfred1970 said:
A gold plated HR will never works because gold it is good only for infrared. In a ruby laser you need dielectric mirrors with AR coatings on the rod's end, or aluminum mirrors DIRECTLY on the rod ends.
The threshold energy in the ruby is very high, so you need a big xenon flashlamp, and a pulse forming network that delivers the right amount of energy in the right amount of time(very important!!).
For comparison, a flash from a camera delivers 8 Joule. My yag laser works with 50 J. A ruby rod often requires more than 300 Joules of eletrical energy to emits some laser light.