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Thread: Custom dichro for mixing 635 nm with 660 nm

  1. #31
    Join Date
    Jan 2006
    Location
    Charleston, SC
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    2,147,488,805

    Smile Group buy payment update

    Update: We now have 6 confirmed payments!

    allthatwhichis - for 1
    buffo - for 1
    dave - for 1
    p1t8ul - for 2
    Stuka - for 1

    4 more to go and I send the order to Semrock! (Damn, this is moving fast...)

    Adam
    Last edited by buffo; 09-15-2008 at 04:55.

  2. #32
    Join Date
    Oct 2006
    Location
    Central Florida
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    7,067

    Lightbulb

    I now need to sell the argon to start the fund for set of Maxyz...

  3. #33
    Join Date
    Jan 2006
    Location
    Charleston, SC
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    2,147,488,805

    Cool

    LaserNerd is looking for an argon laser... Maybe you can work a deal with him. (Yours is multi-line, right?) Send him a PM...

    Adam

  4. #34
    Join Date
    Jan 2006
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    Charleston, SC
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    2,147,488,805

    Exclamation

    Update: Oh hell. Looks like we may be looking for another buyer... One of the original buyers may have to opt-out of this group buy.

    Anyone else interested in a custom dichro that will allow you to mix 635 nm red with 660 nm red?

    Adam

  5. #35
    Join Date
    Jan 2006
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    Exclamation Now we're short 3 buyers...

    Update number 2:

    We have had 3 buyers back out of the group buy. The total right now stands at 6 confirmed (and paid) orders with 1 order pending payment. But we need a minimum of 10 to do the group buy.

    The buyers that backed out said that they might be able to complete the group buy in a couple weeks - pending the availability of funds.

    I am leaving it up to the rest of the confirmed buyers to decide if it's OK to wait on this. If you don't want to wait, I can refund everyone's money now, before I leave for vacation on Saturday.

    Let me know what you guys want to do. I'm OK with waiting, but I want everyone else to have the chance to express their wishes.

    Adam
    Last edited by buffo; 09-15-2008 at 04:56.

  6. #36
    Join Date
    Jul 2007
    Location
    Knoxville, TN & Huntsville, AL, USA
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    3,121

    Default

    I'm OK with waiting for a while....
    RR

    Metrologic HeNe 3.3mw Modulated laser, 2 Radio Shack motors, and a broken mirror.
    1979.
    Sweet.....

  7. #37
    Join Date
    Feb 2007
    Location
    Herts, UK
    Posts
    1,253

    Default

    Me 2
    ..............................

  8. #38
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,488,805

    Cool

    Hey guys;

    Just an update. First - I'm back! Second, we're still short three buyers. I'm waiting for payment on one buyer, and if that comes through we'll be at 8 buyers. But we need 10 to complete the order.

    So come on people! Where is all that interest in the custom dichro to reflect 635 nm red and pass 660 nm red? We've been talking about it for a year now. Surely there are a few more people out there that want to try this?

    Adam

  9. #39
    Join Date
    Jan 2007
    Location
    Yorkshire, UK
    Posts
    4,581

    Default

    Adam

    Will the dichro be o.k. for 637 or 640?, some of these seem to have better beam specs than the 635's (although more expensive). I'm considering combining my Maxyz with the above.

    Cheers

    Jem
    Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001

  10. #40
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,488,805

    Smile

    Hi Jem;

    640 nm is actually the designed cuttoff frequency for the dichro, so yeah, it will work just fine. You can also "angle-tune" the dicrho to shift the reflection band slightly, if you wanted to play around with 643 nm, for example. (But 650 is out of the question. Too far into the transmission band.)

    Look at the chart I posted above. They claim 3% reflective loss at 640 nm. With angle tuning you could probably get that down to 1% loss, and still pass 95% or better of your 660 nm red.

    Adam

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