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Thread: the birth of a 1w 640nm and 1w dual 445nm

  1. #21
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    Jul 2007
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    Default update

    small update
    got the red and blue up and running
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    When God said “Let there be light” he surely must have meant perfectly coherent light.

  2. #22
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    Default

    looking good chris, look forward to seeing ya final beam results.

    assuming this will be ready for the meet?
    Eat Sleep Lase Repeat

  3. #23
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    Default beams

    Should be ready :-) for the meet provided i dont have
    To many problems with the tec cooling, red beam is not that great
    So might switch to waveplate and pbs combo to get it better
    When God said “Let there be light” he surely must have meant perfectly coherent light.

  4. #24
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    Dec 2006
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    Default

    Quote Originally Posted by badger1666 View Post
    Should be ready :-) for the meet provided i dont have
    To many problems with the tec cooling, red beam is not that great
    So might switch to waveplate and pbs combo to get it better
    whys the beam not good? thought you had good lens on there?
    Eat Sleep Lase Repeat

  5. #25
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    Default beam

    It just me being fussy beam at the moment is 3.2 x 3.6
    It could be better, but to improve it i would have to take it to bits
    As the diodes need a nudge in the mounts first ,also lost abit of power
    So another reason to take it apart ,but not till after the meet
    When God said “Let there be light” he surely must have meant perfectly coherent light.

  6. #26
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    Default

    um thats an ok beam, it would fit on your glalvo mirrors.

    and i suspect at distance its smaller than green and 445
    Eat Sleep Lase Repeat

  7. #27
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    Default update

    another update ,
    scan set installed along with the various power supplys to run this beast
    the red blue combo fixed in and test run at full power for 3 hrs with die4chill set at 4amps,
    and it holds steady at 15deg c. i have yet to make the cover for the red/blue combo to keep the fog and dust out. the red has two 640's that went led on me and they got lasorbs on them too, stuck an loc in one but will replace them with 637nm after the uk meet, even with out them i see >2w balanced white ,should be able to crank it upto just over 3w when i add 400mw of 637.
    as for the power supplys i went with a compact flip lid design for size and easy access
    another week and i should see this puppy finished and scanning
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    When God said “Let there be light” he surely must have meant perfectly coherent light.

  8. #28
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    Default

    15 degs is pretty cold chris, room temp is between 20-25 degs. if you take this to a club or somewhere you likely to get condensation.

    looking good though.

    ive stopped using lasorbs they do fook all
    Eat Sleep Lase Repeat

  9. #29
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    Default tec

    i will raise it to 20 deg c , i only had it that low for testing as i had it on full power cw for 3 hrs, so when modulated it wont need much cooling
    When God said “Let there be light” he surely must have meant perfectly coherent light.

  10. #30
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    Aug 2007
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    Under a rock in Cambridge UK
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    Default

    Nice build Chris, look forward to seeing this at the meet...

    Mark

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