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Old 07-10-2008, 10:50 PM #1
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Default Where to find a dichro for combining all colors?

Where could you get a dichro for combining 2 650nm beams. One for combining 2 405nm beams. And if there is such thing. One for combining one 405nm beam with one 532nm beam. And what would you use to combine RGB to get white?


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Old 07-10-2008, 11:13 PM #2
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Default Re: Where to find a dichro for combining all color

I have one for rgb > WHITE or Vice versa on ebay right now It's a little large, but it will do. Same user name. Item number: 290243954501 :P
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Old 07-11-2008, 03:08 AM #3
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Default Re: Where to find a dichro for combining all color

Nice. I would buy it if it was smaller. Thats too big for what I'm doing. You are the guy that sold those 594nm KTP crystals on ebay a wile back? Can you tell me how many watts of IR can be pumped into them. Without saturating the crystal.
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Old 07-11-2008, 03:23 AM #4
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Default Re: Where to find a dichro for combining all color

These crystals needed the vanadate, so they were sold at fire sale prices. The vanadate for 594nm is expensive and hard to find. :'(
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Old 07-11-2008, 03:52 AM #5
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Default Re: Where to find a dichro for combining all color

I thought they only needed yvo4.
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Old 07-11-2008, 04:15 AM #6
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Default Re: Where to find a dichro for combining all color

Will this beamspliter work with any wavelength?

http://www.novalasers.com/NOVAstore/...uct=21#details
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Old 08-17-2008, 05:09 PM #7
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Default Re: Where to find a dichro for combining all color

lens coating: standard optical

so its got no coating making it work for certain wavelengths, but it wont perform as good as a specific wavelength one (more loss)
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Old 08-17-2008, 07:21 PM #8
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Default Re: Where to find a dichro for combining all color

Aren't there small dichro's in the 803T sleds. I'm pretty sure that the small glass cubes in those sleds are dichro's. I have a whole bunch of them. phoenix77/rob 8-) You can also try EDMUND SCIENTIFIC, & I also found a bunch in the SURPLUS SHED, under 'BEAMSPLITTERS'
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Old 08-19-2008, 06:27 PM #9
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Default Re: Where to find a dichro for combining all color

those are pbs cubes

laser wave has some of the best pbs cubes for combining like beams and dichroic mirror for joining mixed colors

http://www.laser-wave.com/
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Old 09-25-2008, 01:39 PM #10
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Default Re: Where to find a dichro for combining all color

Quote:
Originally Posted by Midknight
Where could you get a dichro for combining 2 650nm beams. One for combining 2 405nm beams. And if there is such thing. One for combining one 405nm beam with one 532nm beam. And what would you use to combine RGB to get white?
i *just* wrote a bit about how to do that here:
http://www.laserpointerforums.com/fo...num=1221665007
combining two identical colors and then combining different colors will be different, the first with polarising combining, the latter with dichroic combining.

the cube heruursciences posted/sold is exactly the thing i wrote about too, as far as i can see. it works great for combining colors, indeed!

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Old 11-07-2008, 04:25 AM #11
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Default Re: Where to find a dichro for combining all color

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I thought they only needed yvo4.
Yes- otherwise known as yttrium vanadate.

Y=yttrium VO4=vanadate ion

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Old 11-07-2008, 08:30 AM #12
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Default Re: Where to find a dichro for combining all color

I think YVO[sub]4[/sub] , or yttrium orthovanadate needs to be doped with neodymium to form a crystaline structure of Nd:YVO[sub]4[/sub].Then , I don't know, I think it requires a special coating for whatever wavelenght you want to make the most of.
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