Laser Pointer PrinciplePosted by michale on December 9th, 2016 You can find boxes for this online but I prefer to use an led flashlight and gut it to make room for my laser.So, you want to build a green laser then?This thread is aimed to give you a general feel for what you will need to gather, both in parts and skills, to accomplish a well put together homemade laser that will last.Secondly, to be able to build your first laser it is assumed that you know at least the basics of electronic assembly and some theory.This is a device that regulates current to your laser diode to prevent spikes and keeps your diode nice and happy. How would you like to talk over a laser beam? In about 15 minutes you can set up your own laser communication system, using cheap laser pen pointers and a few parts from Radio Shack.A battery holder that holds the same number of batteries as the laser pointer (often 3 cells). The batteries can be any size, but they must be the same voltage as the laser batteries.A transistor radio. Later we will use a microphone and an amplifier, but at first we will send your favorite radio station over the laser beam.
A laser pointer energy and lights are concentrated in a very small light cone to reach a quite high intensity.And the labled power on laser pointers is the output power.Actually common laser pointers used by teachers and lecturers are less than 5mW.But the laser pointers used by professional and amateur astronomers are much more powerful.The energy reduction is mainly caused by Rayleigh scattering, which is relatively small compared with laser's intensity. A burning laser is a laser pointer that operates at a higher power output. But this simple answer has a lot of implications, depending on your needs; there is a laser for every occasion. It is likely that in a dark room, the beam of a burning laser would be visible where a laser pointer would only show a dot at the beam terminus.It would not be wise to use a burning laser to illuminate PowerPoints at business meetings, mostly due to the dangers of pocking the screen with burn marks or accidentally flash-blinding a board member, but also because it would just be too bright. The sheets of Red Laser light must be aligned to brighten the particles.The 5v is then pulsed to the lasers from the camera signal.Just looking at the blue laser beam will damage your eyes.The lasers must have the optics centered directly on the beam.Glue the optics directly in front of the beam.The lasers must be wired to the synchronizer.If you attempt to build this laser for yourself, you need to be extra (and I mean EXTRA) careful. As the DIY video warns, you need to be sure you are wearing special laser goggles when using this 1 Watt Blue Laser Torch. Laser interferometers use light interference to accurately measure distance. Usually you need a bunch of expensive lab gear, but here is a way you can build one with stuff from your junk drawer.I cut two slits close together in a piece of paper with an razor knife and directed a laser pointer through the slits onto another piece of paper.I oriented the laser beam at a shallow angle to get a strong reflection off the glass surface.This would allow half of the laser beam to reflect off the mirror and the other half to go straight past the edge. Once again, this is not part of the laser pen that this page covers, so the pictures are used as examples only.It is from these hoses that gas will be fed into one end of the laser tube as air pressure will be drawn out of the opposite end by a vacuum pump.The glass tube that serves as the actual laser bore will be the heart of the whole arrangement.As you might have correctly guessed, the arrangement above was used in the construction of another laser project. It is very close to what you will be doing (and what I did) for the laser that is covered on this page. Like it? Share it! More by this author |
