PBS Cubes (650 and 473nm) + AR Coated Dichros + Mirror Mount Group Buy

[Roy G. Biv]

Also, I still would like to see the specifications for the beam splitters. What are their wavelength range?

[mliptack]

There is a set screw that you tighten down to my understanding. These are basically a MM1 style mount.

[mliptack]

Sorry didn't see the second post. The PBS Cubes are centered around 650nm and 473nm, of course they will work for a range of wavelengths near the root wavelength.

Is there any particular wavelength you are looking to use the PBS cubes for? There are a lot of members here that already have these cubes. I personally don't have the equipment to test these, maybe someone who does have that equipment and that have run tests can chime in here.

-Max

[Roy G. Biv]

I would like to know if the blue works well for 457 nm and eventually for 442 nm. When it comes to the red beamsplitter I want to know if it works well for 633 nm.

[mliptack]

I'll have to talk to Bridge about it. I know his dichros are manufactured for the 457nm and 442nm range but you lose some of the transmission of the green wavelengths so he was doing more research in that area. Since this isn't a problem when using a PBS I figure they would also be good for the other blue wavelengths, but like I said I will have to talk to him regarding the exact specs. Same for the 635nm range. I'll let you know.

-Max

[bridge]

I would like to know if the blue works well for 457 nm and eventually for 442 nm. When it comes to the red beamsplitter I want to know if it works well for 633 nm.

Hello Roy
yes, I am sure the red PBS can working both 633nm and 650nm. before the first group buy, I send one PBS to Vathink and he did detail test, here it is ,here is the link, http://www.photonlexicon.com/forums/...ght=pbs&page=5 ,I am sure so long , may be I need find it for convenience you reading

Good news people. I just received the PBS from Bridge and did a little testing with my HeNe tube. The result is pretty good I must say. At 633nm I measured close to 98% in reflection and 97% in transmission efficiency. I haven't tried it at 660nm yet. When I do, I'll give you all the update.

For your information, I have also bought a PBS cube from eBay. Here's a link to the thread that I posted: http://www.photonlexicon.com/forums/...ead.php?t=2898

The PBS cube from eBay is pretty crap. It is kind of polarized but it's acting a bit weird and not very efficient at all. It might be coated for different wavelength. But then, it might be also not polarized at all (standard 50/50 cube). I don't know for sure. I measured about 62% in reflection efficiency. What's worse, it was producing a series of dots when I tested it and the laser beam were coming out from each of its faces ! I think this is due to internal reflection. Check out the picture attached. Does it sounds like a standard 50/50 cube?

An update on the PBS cube from Bridge. I have tested it with 660nm laser diode at 10mW, 50mW and 100mW. On average I get around 97% of reflection efficiency and 96% of transmission efficiency at 90°. For $30 a piece I think it's quite a bargain. I can live with <5% loss. Group buy anyone ? By the way this PBS is centered at 633nm and 15mm x 15mm x 15mm in size, which is quite huge and perfect for red laser with fat beam diameter. I hope this helps. If you guys have any questions, just ask away .

although the blue unit is design wavelength center is 473nm, I am sure it can used at 457nm, for 445nm, there is a little far away, the theory design consider it, but we hadn't 457nm or 445nm laser to test, so I am sorry, if anyone can test 445nm or 457nm, that will be welcome. factual test is better than all words, we like it.
Thanks Max, I am just here.
Best regards!
Bridge

[Roy G. Biv]

Thanks for the info.

[ajohnson30]

Oh hell, put me down for a multi-coated (whitelight) goggle too

[mliptack]

Sounds good, I got you down.

[mliptack]

OK ITS TIME!

Everyone in the group buy. Send me a PM, I will respond with an invoice from Google Checkout. If I haven't already sent you one.

If you would like to be a part of the 1st part of the group buy write here!!!

If you are already a part of it, but I didn't get an invoice sent to you LET ME KNOW NOW!!! I've been checking and re-checking my PMs, but I am sure I missed someone and I'm sorry!

Thanks,
Max