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Thread: 445 experiments

  1. #111
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    Oct 2007
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    Netherlands
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    Quote Originally Posted by rfourt View Post
    testdfgdhgdfh sdfsdf
    verbal diarrhea?

  2. #112
    Join Date
    Jun 2008
    Location
    Stockholm, sweden
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    Nice pics "Doc"

    I have a question, when you guys are talking about a "TEC" Do you mean something like this: (See attachement)

    Or something similar, perhaps a link to where to get a nice one?

    ANother question, Dosnt it get Condense/Moisture?

    Thank you.
    /Rickard

    PS: Sry about the post above but i tried posting 20times and it didnt work, i discovered that there is some bug inserting ebay links.. i tried inserting this link for the TEC:

    cgi.ebay.com/2x-136-8W-TEC-Thermoelectric-Cooler-Peltier-12V-/280518110659?cmd=ViewItem&pt=LH_DefaultDomain_0&ha sh=item41502eadc3
    Attached Thumbnails Attached Thumbnails 378351624_tp.jpg  


  3. #113
    Join Date
    Dec 2006
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    Essex, UK
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    8,648

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    Quote Originally Posted by Doc View Post
    These diodes certainly lend themselves to knife edging.





    doc can you give us some into on lens used and beam spec?
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  4. #114
    Join Date
    Oct 2009
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    Eindhoven, The Netherlands
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    921

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    Quote Originally Posted by rfourt View Post
    Nice pics "Doc"

    I have a question, when you guys are talking about a "TEC" Do you mean something like this: (See attachement)

    Or something similar, perhaps a link to where to get a nice one?

    ANother question, Dosnt it get Condense/Moisture?

    Thank you.
    /Rickard

    PS: Sry about the post above but i tried posting 20times and it didnt work, i discovered that there is some bug inserting ebay links.. i tried inserting this link for the TEC:
    Yep, that's what we're talking about.

    No need to worry about condensation, unless you plan to cool below ambient.

    And who would like a deep frozen laser diode anyway.... Then again, maybe we could crank out 4W of a single with a TEC at -18C!

  5. #115
    Join Date
    Dec 2008
    Location
    Southport, UK
    Posts
    2,746

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    Quote Originally Posted by andy_con View Post
    doc can you give us some into on lens used and beam spec?
    As stated above Andy; uncoated 3 element Aixis, inside face of the module sooted to kill internal reflections from the chrome (causes allsorts of random artifacts and side splashes in my experience).

    Beam is approx 4.5 x 1.5mm at aperture; I haven't measured the divergence yet but I'd estimate slightly over 2mrad for the fast axis, certainly well usable for beams as-is.
    http://img62.imageshack.us/img62/3985/laser.gif

    Doc's website

    The Health and Safety Act 1971

    Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.





  6. #116
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    Dec 2006
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    Essex, UK
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    Quote Originally Posted by Doc View Post
    As stated above Andy; uncoated 3 element Aixis, inside face of the module sooted to kill internal reflections from the chrome (causes allsorts of random artifacts and side splashes in my experience).

    Beam is approx 4.5 x 1.5mm at aperture; I haven't measured the divergence yet but I'd estimate slightly over 2mrad for the fast axis, certainly well usable for beams as-is.
    sorry must have missed where you mentioned the optics.

    thanks
    Eat Sleep Lase Repeat

  7. #117
    Join Date
    Nov 2008
    Location
    Cleveland Ohio
    Posts
    2,599

    Default colour balnce

    Ok I'm looking at the relative brightness chart and find
    660nm-.061
    532nm- .885
    445nm- .042

    So does this work out as 1 part green to 22 parts blue to 15 parts red?

    1mw 532=22mw 445=15mw 660?

    23mw green/500mw blue/341 mw red?

  8. #118
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    Dec 2006
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    Essex, UK
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    just some general dicking around





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  9. #119
    Join Date
    Sep 2008
    Location
    Orlando, Florida
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    1,156

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    Ok I have some TEC's, but no driver. Are we just feeding power to the TEC and letting it cool as much as it can, or is there some sort of feedback?

  10. #120
    Join Date
    Jan 2008
    Location
    Sweden
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    84

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    Quote Originally Posted by Doc View Post
    ..inside face of the module sooted...
    Doc,

    Please, can you explain how you achieve this?


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