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how to make a laser

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Author	Topic: how to make a laser
wave Frequent Poster	posted January 14, 2000 06:29 PM well iam thinking how to make a laser and i have no clue on making it. well i know there is a light but how you keep it so bright and steady i dont know? if anyone can help me i would be very please. thanks for you time.
HMTD Factory Frequent Poster	posted January 14, 2000 10:28 PM Whoa! you'll need a library to answer this, maybe other people have a link for you, here is basic concept. An atom or molecule accepts certain frequencies of light, you give it a frequency that matches, its electron or some part of the molecule bounce up(excited) and come back normal again and gives back the same frequency of light, the photon it gives out is in random direction, so you need to collect it back with a mirror, the photon bounced back can again engage into the lasant (material you excite), so in the lasant(ruby, gas, dye), more and more excited units co-exists, now it emits light of a unique frequency, but the beam is not yet concentrated , you need another two mirrors , one not-all reflective, another one totally reflective, the half-reflective is at the end of the lasant chamber or crystal rod where you want the beam to come out, the other fully reflective mirror face at the opposite end of the chamber, these 2 mirror face each other and are on 2 parallel planes. The half-reflective mirror is transparent at a degree that only when a photon travels perpendicular to the surface of mirror, it can pass it(it's like a bullet can penetrate when collide head-on with an armor plate, deflect when path is bias), now only straight going photons can come out of the mirror-concealment, that's how laser beam is straight and not dispersing. 1So basically you need to give energy to excite the lasant : strobe light, concentrated light, electricity(in gas laser case) 2you need lasant, a pure substance or a special mixture that can improve the lasing. clear crystal of any kind, thin gas, thick dye solution 3You need mirrors around the lasant(makes it better if the light input isn't efficient) 4you definitely need the two mirrors at the opposite end of the lasant chamber (one 100% plated, one 99% plated)
wave Frequent Poster	posted January 15, 2000 12:37 PM humm so far all i can say is wow but if i take a part one of those hand held laser could i get a point of view. or would it be so compact that i could not understand what is going on. where would i get all this stuff so i can make one of these laser. also how big could i make the laser beam. thanks for your help on this topic
The Juice Frequent Poster	posted January 15, 2000 02:31 PM Check out www.repairfaq.org. There are plans for some powerful (30w+) CO2 lasers, but you'll need to be very good at making things, be very patient and have access to the right equipment if you actually try and build one. A laser's not just some kind of special torch you know! cheers, Juice
HMTD Factory Frequent Poster	posted January 15, 2000 08:45 PM So what kind of laser do you want? The kind that points a dot on things or the one that shoots a hole on things? I can give you a site, it sells bunches of plans for special weaponry, new age stuff,and alternative propulsion shit, but I never bought any of those so I can't guarantee their quality, some are already built, expensive like hell. "Future Horizons" http://www.futurehorizons.net/energy/energy.htm If you wanna see how a laser works, you can try library, there will always be something easy to read with schematics lying around. Some laser pointers are actually a diode plus a lens to regulate the light into a beam, not good for understanding laser.
VeHeMT Frequent Poster	posted January 16, 2000 01:39 AM You really need to be careful about palces like futurehorizons and information unlimited etc... 99% of the time they are trying to screw you for your money by selling you something thats not such a "groundbreaking new technology". This is proved with the hoverboard being sold by future horizons, all it is, is a hovercraft with a small gas motor. Also stay away from anything that advertises "free energy". ------------------ VeHeMT's Armoury
DeathShadow Frequent Poster	posted January 16, 2000 02:06 AM listen to VeHeMT he knows what hes talking about, alot of those company's sell you shit that sucks and breaks easily, just be carefull with your money
nbk2000 Moderator	posted January 16, 2000 04:47 AM I was burnt by information unlimited for $40 years ago. I thought I was getting a laser, they sent PVC tubes with a LED inside. And they wouldn't do a refund either. Fuck them. ------------------ "The knowledge that they fear is a weapon to be used against them." www.50megs.com/nbk2000
HMTD Factory Frequent Poster	posted January 16, 2000 06:55 PM I remembered the future horizon sells plans for a laser pistol, the description said it uses a ruby rod(a special color glass rod) , but you should only buy the plan or just look things up in a library. The hoverboard is just a chair with a board and propeller blowing air to the ground.
Predator Frequent Poster	posted January 17, 2000 07:57 AM Actually, encylopedias are a very, very good source for information on Lasers In one particular encylopedia I was reading, it had information on how nearly all the known types of lasers were constructed, what they used, and most importantly, the theory behind it all. My advice: look it up in about 3 encylopedias and you should have all the information about lasers you'll ever need.
Ho ju Moderator	posted January 17, 2000 05:14 PM when you talk about a laser gun (pistol) are you talking about one that would puncture solid structures or one that is just like a laser pointer but works with the click of the trigger? ------------------ -Knowledge is power, power leads to corruption, corruption is a crime, crime doesn't pay. So if you know to much you will go broke!!!
HMTD Factory Frequent Poster	posted January 17, 2000 07:42 PM Well, it uses glass ruby rod and flash light tube, definitely the one that punctures.
nbk2000 Moderator	posted January 18, 2000 03:24 AM The ruby rod laser will puncture metal, like a razor blade or soda can. Not anything useful. The lasers capable of cutting plate steel are huge machines with cooling systems and huge power requirements. But it could blind a person. ------------------ "The knowledge that they fear is a weapon to be used against them." www.50megs.com/nbk2000
HMTD Factory Frequent Poster	posted January 19, 2000 04:54 AM Yeah, the kind that punctures is often a pulse laser, I've seen on TV, a clean hole on a phone book straight through(a medical surgery laser, it has pulse and continuous modes.) The flash light I said should be called flash lamp, it flashes strong light very short.
VeHeMT Frequent Poster	posted January 19, 2000 08:50 PM Dont forget the large storage capacitors necessary. Kinda like an overgrown monster camera flash circuit with large flash tubes next to a ruby rod. These things make a lot of heat and need to be cooled inbetween shots. ------------------ VeHeMT's Armoury

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