Got Red?

**buffo** · 09-23-2007, 00:50

Originally Posted by QUAZAR

So in theory, you could combine 2 of those with a dichro, another 2 with a second dichro and then use a PBS for 800mw of red.

Or you could combine 2 660 diodes with one PBS cube, combine 2 other 635 diodes with a second PBS cube, and then mix the two red beams with a single dichro. Either way will work, and yeah, you'd end up with a lot more red that way.

Adam

**cruch** · 09-23-2007, 01:06

I was thinking of this before! But I thought it couldnt be done!
SO you are saying Buffo: it can be done with 2 660nm (V/H) diodes with one PBS cube and 2 others 635nm (V/H) diodes with a second PBS cube then combine them with a dichro thats reflect 660nm, pass 635nm dichro ?
Thats sounds really great!!

**allthatwhichis** · 09-23-2007, 01:07

I think dave from lasershowparts was wanting to find a dichro that would do it. Didn't someone say arctos or something was trying it? or maybe it was something yadda said...

**buffo** · 09-23-2007, 03:25

Yeah, several people were looking into sources for the custom dichro you need. That's the only sticking point - you gotta have at least one dichro to mix the resulting 660 nm and 635 nm beams.

Never heard any feedback on cost or availability of the dichro, but it shouldn't be that difficult. Physics is on our side on this one; you've got 25 nm between the two beams... That's more than enough tolerance for a dichro.

Adam

**allthatwhichis** · 09-23-2007, 04:39

Originally Posted by Buffo

Never heard any feedback on cost or availability of the dichro, but it shouldn't be that difficult. Physics is on our side on this one; you've got 25 nm between the two beams... That's more than enough tolerance for a dichro.

What did happen to that idea?

dave???

**QUAZAR** · 09-23-2007, 04:47

CUSTOM DICHROICS anyone?

**steve-o** · 09-23-2007, 05:12

Stupid question time..
Why can you not combine 2 randomly polarized beams of the same wavelength into a non polarized BS cube?

**QUAZAR** · 09-23-2007, 06:02

I presume the B/S would work as intended and split the 2 incoming beams.

**steve-o** · 09-23-2007, 06:14

Using it as a combiner and not a splitter?

**steve-o** · 09-23-2007, 07:03

This is a dual-topic thread

sorry--
This is:
A variation to the previous design. Everyone please feel free to point out design flaws/ errors (before I start ordering parts..

)

(The link at the bottom for the caps is non-clickable)

Here is is
http://www.newark.com/jsp/Passives/C...sp?sku=78K7802

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