what bulbs are used in a 250mw lazer pointer?

Question

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if there are no bulbs what makes it work den

Answer 1

They're right, no bulb. The equivalent might be the diode, the solid state, sealed unit within the laser pointer that the power is fed to.

There are some great vendors of high end laser gear out there. I think http://www.extremelasers.com/ is one of them - as I recall they had some cool videos up showing their lasers popping baloons and whatnot. Fun stuff.

A buddy of mine has... I think it's a 3W blue laser. Gas, not solid state. For shows. I imagine he uses it for graphic scan projecting but I've never visited in on any of his events and we hadn't talked about the unit in awhile.

Answer 2

no bulbs, it's a laser.
laser is actually an acronym:
Light Amplification by the Stimulated Emission of Radiation
in your little pointer, this is done within a semiconductor crystal.

if you want more explanation, you should state your age or level of education so we know how much to simplify the explanation, otherwise I'd refer you to articles on the web (check wikipedia for example)

such technology is so 20th century. where have you been?
what, you just fell off the turnip truck?

Answer 3

A "250mW laser pointer" would not be a laser pointer at all. It would almost classify as a device for laser eye surgery, certainly enough to make you blind for the rest of your life in far less than a second if you looked into the beam.

A laser pointer would use a semiconductor laser diode with closer to 0.25mW of light output, i.e. 1000 times less than what you are asking for. And even with those I would advise NOT to look directly into the beam, at all.

Answer 4

a garden variety lazer pointer uses a common LED as the light source.