white beam with NO dichros?

[gottaluvlasers]

OK-

Just a thought here and please, i dont claim to be Mr smarty pants technical guru, but this makes sense to me.

Why cant we just take a red laser, green laser and blue laser at any heights, any angles, any polarizations and shine them together to make a white dot? At that whte dot, would be an aperture into a fiber cable of any given length. wouldnt th output of this fiber be a perfect white beam and also, all beams the exact same width? i dont have a piece of fiber here, or i would just try it. but in my head this seems like it would work.

dont laugh at my rudimentary drawing.



thoughts?

-Marc

[Robin]

Sure, as long as you can cram all those beams into the fiber's acceptance angle:

http://en.wikipedia.org/wiki/Numerical_aperture

Which would be exceedingly difficult to do.

[dnar]

Sure, as long as you can cram all those beams into the fiber's acceptance angle:

http://en.wikipedia.org/wiki/Numerical_aperture

Which would be exceedingly difficult to do.

Wouldn't a funnel and gravity help?

[Stoney3K]

Wouldn't a funnel and gravity help?

He said 'numerical aperture'. Not 'event horizon'.

Unless you plan to run a show in a parallel universe.

[dsli_jon]

Why cant we just take a red laser, green laser and blue laser at any heights, any angles, any polarizations and shine them together to make a white dot?

Same reason you can't make a light saber... Can't make 3 beams simply 'stop' and change-direction to get sent-down an input-coupler properly...
but dnar might be onto something... funnel... gravity... I've got it! Put a small black-hole right at the input-coupler!!

but in my head this seems like it would work.

While you're in there, Mr Freethinker, cough me up a nice 2W RYGB all-in-one diode, will ya? I need 2 of them, stat...

peas..
j

[mixedgas]

That NA thing can be beat, just takes a meter long optical bench.

Steve

[Phredy1]

It seems like it should work to me too, but I'm always dreaming up something that I think should work - but it never does.

[VJ AIWAZ]

im no fiber optic guy but would this work



http://www.tpub.com/neets/tm/108-11.htm

[norty303]

In order to get the source of the lasers as close together as possible before launching into the fiber, could you employ 1 set of 3 very small mirrors, very close together, which you fire the respective colours onto?
Okay, you lose a little bit in optics there, but you can get them very close.
Or even line up the laser modules then do a sort of knife edge mirror arrangement, with a focal point at the fiber end?

[allthatwhichis]

Man you just made me feel old... I tried something over 4 years ago but I think I used dichros and it didn't work well...

http://www.photonlexicon.com/forums/...eam-into-fiber...

That may be the exact opposite of what you are thining so you could do it in reverse and it might work...