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Thread: 40 Watt 638nm module question

  1. #11
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
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    When a 400 uM fiber only fits on a 25 mm or greater scanner aperture, its not so amazing for our purposes.

    Steve
    Qui habet Christos, habet Vitam!
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  2. #12
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    ... for a high-power laser-engraving application I've assembled a scanning head with servo-motors instead of galvos and 40mm-mirrors with 5mm thickness ... for me it's cheaper and simpler to control than common galvos ;-)

    Viktor

  3. #13
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    Quote Originally Posted by mixedgas View Post
    When a 400 uM fiber only fits on a 25 mm or greater scanner aperture, its not so amazing for our purposes.

    Steve
    I wouldn't be planning to scan the beam in the conventional way, Steve.

    ... for a high-power laser-engraving application I've assembled a scanning head with servo-motors instead of galvos and 40mm-mirrors with 5mm thickness ... for me it's cheaper and simpler to control than common galvos ;-)

    Viktor
    Yeah, Victor, if I were to scan, it would have to be with huge mirrors like that
    .. but I wouldn't scan this beam with X/Y galvos ..

  4. #14
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    Just to stir this up. If you have a little time, an 8 diode Mitsu P73 module, cooled to an easy -20C and driven at a conservative 10 W would probably be nearly 1/2 as bright as the Dilas module and with a 12mm beam diameter would have MUCH lower divergence than the 400um fiber collimated to the same 12mm diameter beam.

  5. #15
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    Stir it up Yeah I could combine a bunch of P73s Eric ... nah .. too much trouble :/ Really what I need is a 40W single diode called a P73000000000

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    Steve,
    Just that it would be the size of a Stetson.

  7. #17
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    Quote Originally Posted by planters View Post
    Steve,
    Just that it would be the size of a Stetson.
    ... or a shoe-box -- attached an image of a 20W@652nm-module, combined from 60x +1x fibercoupled diodes emitting through a 0.7mm-fiberbundle ...

    Viktor
    Attached Thumbnails Attached Thumbnails Diodenmodul 61x.jpg  


  8. #18
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    Wow. Personally I wouldn't mind that though. Compared to gas ion lasers this is small. Even a Stetson size single diode would be compact in comparison. I'll take one (when they're invented) ..

    Really I guess a 40W OPSL is what is needed. Too bad they're so pricey. I wish they made a cheap DIY OPSL kit you put together yourself ..
    Lets give our Chinese laser mfg friends that idea

  9. #19
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    ... this 'shoe-box' is roughly 20 years old - this are only 300mW@652nm-diodes!

    I have some 50+ of a bit newer (maybe 12 years old) fibercoupled 975nm-diodes with 9Watts each, which (likewise combined) will give something like 400Watts on a spot of maybe 0.5mm, so maybe 200+ Watts out of a 0.4mm-fiber ... too bad, they aren't in the visible range :-/

    Viktor

  10. #20
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    Quote Originally Posted by VDX View Post
    ... too bad, they aren't in the visible range :-/

    Viktor
    Yeah, but 975 doubled is 487.5

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