Got Red?

[dave]

Back to the other topic- Interesting pic on the German section of Laserfreak- I just loves them groovy mirror mounts

They are Arctos style mounts - look like the old type Arctos used...

[buffo]

Ok - I fired off a half-dozen e-mails to some dichro manufacturers I found on Google. Maybe I'll get a response from some of them.

If anyone wants to do more digging on this, here's a link with *tons* of optics companies that claim to be able to manufacture / supply custom dichros: http://www.thomasnet.com/products/di...9061645-1.html

(No, I haven't contacted anyone on the list in the above link. Everyone I contacted came straight from a google search.)

Adam

EDIT: Already got a response back from one company (Opticorp) that said they couldn't do it, but suggested that I look for "Rugate filters" instead of dichroics. He said they will certainly work for our application. However, a quick search shows that they cost around $600 a piece! I'm still looking though...

[steve-o]

I shot one off to Onestoplasershop..

[steve-o]

Anybody sells them?

[QUAZAR]

I have contacted the custom dichro dept at Lightwave Research.
I specified qty of 10 - 20 pieces, doubt they would do just 1.
We may need to organise a G/B if this comes off.

[steve-o]

Which wavelengths? 635/660?
Prices yet?

[QUAZAR]

I asked for pass 635, reflect 655.
A crossover point of approx 645 should suffice.

[buffo]

Here's the message I sent (personal info removed):

Hello;

My name is Adam Burns, and I am a laser hobbyist. I've constructed a few laser show projectors already, and typically I've used dichroic mirrors to combine various wavelengths from different lasers to create a white-light beam. A typical projector will have three lasers: a red laser at 635 or 660 nm, a green laser at 532 nm, and a blue laser at 473 nm. Normally the dichros used to combine the three wavelengths have a fairly narrow transition band between full reflectance and full transmission. (On the order of 25-30 nanometers between the two.) The dichros are normally circular, aproximately 25 mm in diameter, and cost between 25 and 60 dollars. (See Edmundoptics.com)

Recently, several laser enthusiasts on the PhotonLexicon.com discussion forum have been looking into the possibility of mixing 635 nm red with 660 nm red in a projector. This would allow for more total red power while also expanding the color pallete. Unfortunately, we haven't found a manufacturer that has an off-the-shelf dichro that can reflect 660 nm light while passing 635 nm. (Or vice versa, for that matter.)

A quick google search turned up your website, and judging by the content there, it would seem that you have the ability to manufacture a dichro that would accomplish what we want to do. Would you please quote me price and availability for such a dichro? Assume a minimum order of 10 pieces, and a maximum order of 100 pieces.

Thank you!

Adam Burns
(address)
(phone)
(e-mail)
user "buffo" on Photonlexicon.com

I'll let you know what other replies I get.

Adam

[QUAZAR]

Prices yet?

I reckon they'll need more than 12 minutes.

[steve-o]

Hehe - ok we'll give 'em 15