compact RGB collimated unit

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Re: compact RGB collimated unit

by holomaker » Sun Feb 02, 2020 7:13 pm

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Re: compact RGB collimated unit

by holomaker » Sun Feb 02, 2020 7:11 pm

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Re: compact RGB collimated unit

by holomaker » Sun Feb 02, 2020 7:08 pm

Yes alignment is to difficult to achieve, I’ve now cut the red and green laser out of the engine housing along w collimating optics, now both red and green beams are matched, then simply combined w a dichroic...
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Re: compact RGB collimated unit

by Grayham » Fri Dec 13, 2019 11:27 am

The alignment problems are beyond me though you may be able to resolve your polarisation problem by rotating the diodes in their housing if they allow it.

I suspect they are glued in but access to the diodes looks easier than the green.

Re: compact RGB collimated unit

by Tekosh » Wed Dec 11, 2019 1:12 pm

I actually have that one. I made the laser driver myself.
It has two problems. The polarization for green is different than Red and Blue, so I will need to add a waveplate to the green which is a challenge given the super small space.
Also, the lasers are not very well aligned and in order to expand that, I will need an apochromatic telescopic stage. I'm afraid the misalignment causes me some trouble.

Do you have any solutions in mind for this?

Re: compact RGB collimated unit

by Grayham » Tue Dec 10, 2019 3:53 pm

Hi,

Dave Battin on this forum and on the facebook forum is selling RGB laser engines.

This is the link to the thread on this forum,
https://holowiki.org/forum/viewtopic.ph ... 90ccec0970

You are unlikely to find anything off the shelf with a 1" output but you can expand the beam and then run it through a columnating lens.

Talk to Dave :)

Grayham

compact RGB collimated unit

by Tekosh » Mon Dec 09, 2019 7:40 pm

Hi All,

I don't know if this is the right thread for my question.
I'm looking for a compact RGB collimated unit which outputs a 1-inch, aligned, collimated beam.
I haven't been able to find an appropriate one. The lasers don't need to be super coherent, laser diodes work just fine.
Do you guys have any suggestions?
If you know a supplier or specific company, please send me the link.

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